翻译
  • 简明词典(词霸)
  • 柯林斯词典
  • 牛津词典
  • once

    高中/CET4/CET6/考研/IELTS

    • [wʌns]
    • [wʌns]

    释义

    • 常用
    • 高考讲解
    • adv.
      一次,一趟; 一倍; 曾经; 一旦;
    • conj.
      一旦…就…; 一经;
    • n.
      一次,一回;

    大小写变形:OnceONCEOnCE

  • 实用场景例句

    • 全部
    • 一次
    • 一趟
    • 一倍
    • 曾经
    • 一旦
    • 一旦…就…
    • 一经
    • 一回

    She guessed the right answer at once.

    她立刻猜出了正确的答案.

    ——《简明英汉词典》

    He will explain it fully once and for all.

    他将把它充分地解释一次就此了结.

    ——《简明英汉词典》

    The batsman began slowly but once he got his eye in he started to play some very good shots.

    那个击球手起步较慢,但是当他的眼光变得准确起来后,他打了几个很好的球.

    ——《简明英汉词典》

    She braced herself up and tried once more.

    她鼓起勇气又试了一次.

    ——《简明英汉词典》

    Their attempts at conciliation had failed and both sides were once again in dispute.

    他们进行调停的努力失败了,双方再次陷入争吵.

    ——《简明英汉词典》

    Not once have the workers of our factory succeeded in inventing new machines, but many times.

    我们厂的工人们成功地发明新机器已经不止一次了, 而是许多次了.

    ——《简明英汉词典》

    Once a knave, ever a knave.

    一次成无赖, 永远是无赖.

    ——《简明英汉词典》

    Let's go through the sonata once more.

    这个奏鸣曲咱们再练习一遍.

    ——《简明英汉词典》

    Once you're stuck in deep snow, it's difficult to lever yourself out.

    你一旦陷进深雪中, 那就很难出来.

    ——《简明英汉词典》

    All at once he fell into a state of profound melancholy.

    他立即陷入无尽的忧思之中.

    ——《简明英汉词典》

    The court laid the young thief under an obligation to report to the police station once a week.

    法院强迫那个小偷每周向警察局报到一次.

    ——《简明英汉词典》

    Slavery was once socially sanctioned.

    奴隶制曾经为社会所认可.

    ——《简明英汉词典》

    He had seen her only once since the meeting.

    自从那次会议以来,他只见过她一次.

    ——《简明英汉词典》

    This area was once a wildlife reserve.

    该地区曾是一个野生动物保护区.

    ——《简明英汉词典》

    Once people retire they automatically cease to be union members.

    人们一旦退休就自动不再是工会会员.

    ——《简明英汉词典》

    Once these difficulties were got over, the work would speed up.

    一旦克服了这些困难, 工作进展就快了.

    ——《简明英汉词典》

    Hearing that there was an emergency case, the doctor put down his chopsticks and left at once.

    听说有急诊, 医生撂下筷子就走.

    ——《现代汉英综合大词典》

    I have been there once.

    我到过那儿一次.

    ——《现代汉英综合大词典》

    I took the hint and left at once.

    我领会了暗示立即离开了.

    ——《现代英汉综合大词典》

    Once you've given your word, don't try to back out.

    一旦许下诺言, 就不要想翻悔.

    ——《现代汉英综合大词典》

    If you find anything wrong with the machine, you should put it right at once.

    发现机器有故障, 要及时排除.

    ——《现代汉英综合大词典》

    On hearing that the new novel was published, he rushed at once to the bookshop for a copy.

    听说那本小说出版了, 他就迫不及待地跑到书店去买.

    ——《现代汉英综合大词典》

    After ten years'hard study noticed by none, his fame fills the land once honours are won.

    十年寒窗无人问, 一举成名天下知.

    ——《现代汉英综合大词典》

    I don't want ifs and buts; swallow your medicine at once.

    我可不听你泡蘑菇, 马上吞下你的药.

    ——《现代英汉综合大词典》

    She told him to leave the room at once.

    她要他马上离开房间.

    ——《现代汉英综合大词典》

    I want to see her once more.

    我打算再见她一次.

    ——《现代汉英综合大词典》

    He determined to go [ that he ( should ) go ] at once.

    他决心立刻就 走.

    ——《现代英汉综合大词典》

    You want to see a doctor at once.

    你必须马上去看医生.

    ——《现代英汉综合大词典》

    收起实用场景例句
  • 真题例句

    • 全部
    • 四级
    • 六级
    • 高考
    • 考研

    Where are you in the cycle of renewal: Are you actively preserving the present, or selectively forgetting the past, or boldly creating the future? What advice would Leah give you to move you ahead on your journey? Once we're on the path of growth, we can continually move through the seasons of transformation and renewal.

    出自-2017年6月阅读原文

    The late Richard Hackman of Harvard University once argued, I have no question that when you have a team, the possibility exists that it will generate magic, producing something extraordinary… But don't count on it.

    出自-2017年6月阅读原文

    What people were like when they came in had greater consequence than what happened once they were there.

    出自-2016年6月阅读原文

    Trigger its built-in alarm system at once.

    出自-2016年6月阅读原文

    She has once run a pre-K program.

    出自-2016年6月阅读原文

    Once driverless cars are actually for sale, the early adopters will be the people who can afford to buy them.

    出自-2016年6月阅读原文

    Wireless devices will transmit signals so as to activate the alarm once something wrong is detected.

    出自-2016年12月阅读原文

    Sugar, alcohol and tobacco, economist Adam Smith once wrote, are commodities which are nowhere necessaries of life, which have become objects of almost universal consumption, and which are, therefore, extremely popular subjects of taxation.

    出自-2016年12月阅读原文

    So, too, would the motion detectors in your home, so the thief will need to continue jamming once he's inside and searching for things to steal.

    出自-2016年12月阅读原文

    This once-in-alifetime  event actually may take  place twice in some folks’ lives.

    出自-2016年12月听力原文

    When Jonathan Swift proposed, in 1729, that the people of Ireland eat their children, he insisted it would solve three problems at once: feed the hungry masses, reduce the population during a severe depression, and stimulate the restaurant business.

    出自-2015年12月阅读原文

    Once you have worthy opponents, set some ground rules so everyone understands responsibilities and boundaries.

    出自-2015年12月阅读原文

    Once the essay was flawless, she would take an evening to walk me through my errors.

    出自-2015年12月阅读原文

    Nearly two-thirds of us grab fast food once a week, and we get almost 25% of our daily calories from snacks.

    出自-2015年12月阅读原文

    Franz Kafka once said: Writing is utter solitude ( ' , 独处 ), the descent into the cold abyss ( ' , 深渊 ) of oneself.

    出自-2015年12月阅读原文

    Once, just after I returned from my year in Vienna, I was asked to translate for a German judge at an Olympiclevel horse event.

    出自-2015年12月听力原文

    Once across, the ropes were tied down and wooden bridges were hung from them.

    出自-2015年12月听力原文

    He had a terrible temper, and once threatened to kill another child.

    出自-2015年12月听力原文

    they are not reused once a new edition comes out

    出自-2013年6月阅读原文

    All computers do is fetch and work with numbers, he once explained, but do it fast enough and "the results appear to be magic".

    出自-2012年12月阅读原文

    And most noticeable of all, there is the phenomenon of large urban and suburban high schools that have split up into smaller units of a few hundred, generally housed in the same grounds that once boasted thousands of students all marching to the same band.

    出自-2012年6月阅读原文

    I say you only live once and we work hard and what's the point if you can't go on holiday.

    出自-2011年12月阅读原文

    We can get a lot of our ingredients once a week from the UK," Tamlyn explains.

    出自-2011年6月阅读原文

    Tamlyn says that besides importing ingredients from Britain once a week, his restaurant also buys vegetables from the local markets

    出自-2011年6月阅读原文

    it takes a long time to restore nature once damaged

    出自-2010年12月阅读原文

    Once she lost a two-cent stamp and spent the night looking for it.

    出自-2014年6月听力原文

    Get key information by reading just once or twice

    出自-2014年6月听力原文

    Why did Donna go back to Brazil once again?

    出自-2013年12月听力原文

    Finally, on June 7, McLaughlin once again demonstrated his carelessness by knocking down several mailboxes near the edge of the company's parking lot

    出自-2013年12月听力原文

    But it's no longer what it once was in the region.

    出自-2012年6月听力原文

    So some of the values they teach may not be as important in the culture as they once were.

    出自-2011年12月听力原文

    It cannot be fully restored once damaged.

    出自-2011年6月听力原文

    The British traveler Charles Thompson spoke for many Grand Tourists when in 1744 he described himself as being impatiently desirous of viewing a country so famous in history, a country which once gave laws to the world, and which is at present the greatest school of music and painting, contains the noblest productions of sculpture and architecture, and is filled with cabinets of rarities, and collections of all kinds of historical relics.

    出自-2017年6月阅读原文

    The elevation of the room that once belonged only to the servants to that of design showcase for the modem family tells the story of a century of social change.

    出自-2016年6月阅读原文

    That falls far short of the billions of dollars people once expected it to generate.

    出自-2016年6月阅读原文

    Parents are concerned that their children may get involved in criminal offences once they reach their teens.

    出自-2016年6月阅读原文

    No wonder parents worry their own kids might spin out of control once they hit the turbulent waters of adolescence.

    出自-2016年6月阅读原文

    It had, apparently, been fished out of existence; and the once mighty Newfoundland fleet now gropes about frantically for crab on the sea floor.

    出自-2016年6月阅读原文

    About once a week, I have a client that will bring up a new certification I've never even heard of and I'm in this industry, said Kevin Wilhelm, chief executive officer of Sustainable Business Consulting.

    出自-2016年6月阅读原文

    Putting in effect the policies in the agreement at once.

    出自-2016年12月阅读原文

    Perlow calls this vicious cycle the cycle of responsiveness: Once bosses and colleagues experience an employee's increased responsiveness, they increase their demands on the employee's time.

    出自-2016年12月阅读原文

    Consumers are becoming increasingly bored with what companies have to offer: A survey of 28,000 consumers in 28 countries released by Accenture found consumers are not as excited about technology as they once were.

    出自-2016年12月阅读原文

    Stacy is going to walk you through the step-by-step process of becoming a social worker and Mill will tell you about the range of options you have once you get your social work degree, as well as the high standards of responsibility the social workers must adhere to.

    出自-2016年12月听力原文

    that is, once you build it up, it has to go somewhere.

    出自-2015年12月阅读原文

    Unfortunately for them ( ' , and often the taxpayers), our energy systems are a bit like an aircraft carrier: they are unbelievably expensive, they are built to last for a very long time, they have a huge amount of inertia ( ' , meaning it takes a lot of energy to set them moving), and they have a lot of momentum once they are set in motion.

    出自-2015年12月阅读原文

    So a heavy object, like a football player moving at a high speed, has a lot of momentum — that is, once be is moving, it is hard to change his state of motion.

    出自-2015年12月阅读原文

    Once you have started the boulder rolling, it develops momentum, which is defined by its mass and velocity.

    出自-2015年12月阅读原文

    Now, she attributes much of her understanding of college to that: But once I got to campus, it was a completely different ball game that no one really prepared me for.

    出自-2015年12月阅读原文

    By sanctioning this watered-down version of college, universities are catering to the social and educational needs of wealthy students at the expense of others who won't enjoy the financial backing or social connections of richer students once they graduate.

    出自-2015年12月阅读原文

    An avalanche once closed the path, killing 63 people.

    2018年高考英语全国卷3 阅读理解 阅读B 原文

    As I watch her chase after a squirrel, throwing her whole being into the here-and-now of an exercise that has never once ended in victory.

    2015年高考英语浙江卷 阅读理解 阅读D 原文

    As Tolstoy once said, "one can live magnificently in this world if one knows how to work and how to love, to work for the person one loves and to love one's work."

    2016年高考英语天津卷 阅读理解 阅读C 原文

    As you may know already, it's a required meeting once a week.

    2017年高考英语全国卷2 听力 原文

    At that moment, I remembered that my father once said, " the classroom is a place for learning and that include leaning from textbooks, and mistake as well."

    2018年高考英语全国卷3 语法填空 原文

    Athens was not in the farthest background of his mind, but once man has a great and good idea, it is never completely lost.

    2015年高考英语江苏卷 阅读理解 阅读D 原文

    But once I started, I simply couldn't put it down.

    2014年高考英语全国卷1 听力 原文

    Gray wolves once were seen here and there in the Yellowstone area and much of the continental united states, but they were gradually displaced by human development.

    2017年高考英语全国卷3 阅读理解 阅读C 原文

    Guests staying at plaza hotel will be given meal tickets worth $36 once they have produced 10 watt hours of electricity.

    2016年高考英语浙江卷(10月) 阅读理解 阅读B 原文

    He hurried home, never once looking back to see if he was being followed.

    2017年高考英语江苏卷 单项填空 原文

    He was just saying: "I'm king of this forest, and here is your reminder! " Once his message was delivered, he allowed me to stay and watch.

    2018年高考英语全国卷3 语法填空 原文

    Holker once again opens is gardens in aid of the disadvantaged.

    2018年高考英语全国卷3 阅读理解 阅读A 原文

    However, once I worked with statewide and local government, I realized that a better fit for me would be public policy, and now I am in the process of changing my area.

    2016年高考英语浙江卷(6月) 阅读理解 七选五 原文

    I became out of breath and the once injured ankle hurt badly.

    2018年高考英语北京卷 阅读理解 阅读A 原文

    I believe you will have a wonderful time here once you get to know everyone else.

    2015年高考英语陕西卷 单项填空 原文

    I come here once a week, mostly Friday or Saturday.

    2015年高考英语湖南卷 听力 原文

    I once wrote a paper on the influence of fairy tales on Roald Dahl's writing and it gave me a new appreciation for his strange and delightful words.

    2019年高考英语全国卷2 阅读理解 阅读A 原文

    I saw a dark future for my once sweet daughter.

    2015年高考英语重庆卷 完形填空 A 原文

    I still remember visiting a friend who'd lived here for five years and I was shocked when I learnt she hadn't cooked once in all that time.

    2018年高考英语浙江卷 语法填空 原文

    If you have any doubts about your health, you'd better consult your doctor at once.

    2015年高考英语天津卷 单项填空 原文

    In a fire drill, the students should shut the door and leave at once.

    2018年高考英语天津卷 阅读理解 阅读A 题设

    It cannot be discovered once for all.

    2015年高考英语江苏卷 阅读理解 阅读D 原文

    It was carried out once a year.

    2015年高考英语湖南卷 阅读理解 阅读C 选项

    It was once common to regard Britain as a society with class distinction.

    2015年高考英语广东卷 阅读理解 阅读D 原文

    Lorry Chang goes to the Snoopy Café about once a week.

    2015年高考英语上海卷 听力 原文

    Many westerners who/that come to China cook much less than in their own countries once they realize how cheap it can be to eat out.

    2018年高考英语浙江卷 语法填空 原文

    Measles, which once killed 450 children each year and disabled even more, was nearly wiped out in the united states 14 years ago by the universal use of the MMR vaccine.

    2017年高考英语北京卷 阅读理解 阅读C 原文

    Miss Longfield added: "Then there is this push to connect—if you go offline, will you miss something, will you miss out, will you show that you don't care about those people you are following, all of those come together in a huge way at once."

    2018年高考英语江苏卷 阅读理解 阅读D 原文

    My dad never once said, "if you want to catch a fish you need to think like a fisherman."

    2015年高考英语广东卷 阅读理解 阅读B 原文

    Nasa is worried about two things: recovery time once astronauts return home, and, more importantly, how to maintain strength and fitness for the two and a half years or more that it would take to make a round-trip to mars.

    2015年高考英语湖北卷 阅读理解 阅读D 原文

    News of the first kind pays its rewards at once.

    2015年高考英语江苏卷 任务型阅读 原文

    No matter how attractive they look in the store, once I get them home they're unfailingly dry, hard, and tasteless.

    2015年高考英语全国卷1 阅读理解 阅读B 原文

    Normally at least once a week, but she's now a volunteer teacher at a mountain village in Africa.

    2017年高考英语浙江卷(11月) 听力 原文

    Once called the garden of Amsterdam, it still attracts travelers to come over to cycle and walk through the surrounding forests.

    2015年高考英语湖北卷 阅读理解 阅读C 原文

    Once fire and emergency people arrive, Larry and the other man backed off and let them go to work.

    2016年高考英语全国卷1 完形填空 原文

    Once I had a boy who worked experimentally with tinkertoys in his free time.

    2016年高考英语全国卷2 阅读理解 阅读B 原文

    Once lighthouses had telephones, keepers would call each other to warn that the inspector was approaching.

    2015年高考英语湖南卷 阅读理解 阅读C 原文

    Once that happened, I just kept pushing my studying further and further back in my day.

    2018年高考英语浙江卷 完形填空 原文

    Once the damage is done, it will take many years for the farmland to recover.

    2015年高考英语北京卷 单项填空 原文

    Once they arrive, the tables are turned.

    2017年高考英语全国卷2 阅读理解 阅读D 原文

    Once we have a common interest, a friendship can begin.

    2015年高考英语安徽卷 任务型读写 原文

    Once when I was facing a decision that involved high risk, I went to a friend.

    2015年高考英语天津卷 阅读理解 阅读D 原文

    Once when she was facing away, I reached out and carefully scratched her back with my finger, she didn't move.

    2015年高考英语四川卷 完形填空 原文

    Once you have reached a thousand dollars, you'll find you probably have the motivation to continue to save even more.

    2016年高考英语上海卷 听力 原文

    Once, a passenger next to me talked out loud on his mobile phone.

    2015年高考英语重庆卷 阅读理解 阅读C 原文

    Once, after a trip to Hollywood, I returned to Australia so depressed and spent months in my bedroom painting, listening to Eckhart Tolle's music and trying to find myself again.

    2017年高考英语天津卷 阅读表达 原文

    Once, while working overnight at a store, he let a homeless man sleep in his truck.

    2017年高考英语全国卷2 完形填空 原文

    Our generation once joined hands and stood firm at times of national emergency.

    2016年高考英语北京卷 阅读理解 阅读D 原文

    Passenger pigeons once flew over much of the united states in unbelievable numbers.

    2014年高考英语全国卷1 阅读理解 阅读B 原文

    Prevention is key, scientists says because once ecosystems pass their tipping point, it is remarkably difficult for them to return.

    2019年高考英语天津卷 阅读理解 阅读C 原文

    Once I look up something on the Internet, I don't need to keep all the details for future use—I know where to find that information again and can quickly and easily do so.

    2016年高考英语江苏卷 阅读理解 阅读D 原文

    The obvious one is money: eating out once or twice a week may be affordable but doing this most days adds up.

    2018年高考英语浙江卷 语法填空 原文

    The story once again tells us that one good turn deserves another.

    2018年高考英语北京卷 完形填空 原文

    Their wings can bridge the gap between lines, resulting in electrocution if they touch two lines at once.

    2016年高考英语北京卷 阅读理解 阅读C 原文

    These results, once again, lead to concrete advice: "once an individual begins volunteering, continued efforts might focus on developing a volunteer role identity.

    2015年高考英语江苏卷 阅读理解 阅读C 原文

    TV Ears is so comfortable that Jack forgets he has them on ! he can once again hear and understand the dialogue.

    2015年高考英语北京卷 阅读理解 阅读B 原文

    We do give you on the job training, once every month during normal hours.

    2016年高考英语北京卷 听力 原文

    When I was 17, I read a magazine article about a museum called the mcnay, once the home of a watercolorist named marian mcnay.

    2018年高考英语天津卷 阅读理解 阅读B 原文

    With 500 years of history, Hampton Court was once the home of four kings and one queen.

    2015年高考英语全国卷2 阅读理解 阅读D 原文

    Yet, now that I'm growing and the world I once knew as being so simple is becoming more complex, I find myself needing a way to escape.

    2019年高考英语天津卷 阅读理解 阅读B 原文

    But don't bother trying to kill off old habits; once those ruts of procedure are worn into the hippocampus, they're there to stay.

    出自-2009年考研阅读原文

    To read such books today is to marvel at the fact that their learned contents were once deemed suitable for publication in general-circulation dailies.

    出自-2010年考研阅读原文

    Rage Against the Haze failed once state funding was cut.

    出自-2012年考研阅读原文

    Once a discovery claim becomes public, the discoverer receives intellectual credit.

    出自-2012年考研阅读原文

    Nobel Laureate and physiologist Albert Azent-Gyorgyi once described discovery as “seeing what everybody has seen and thinking what nobody has thought.”

    出自-2012年考研阅读原文

    Sadly, the spirit of inquiry once at home on campus has been replaced by the use of the humanities and social sciences as vehicles for publicizing “progressive,” or left- liberal propaganda.

    出自-2014年考研阅读原文

    King Juan Carlos of Spain once insisted “kings don’t abdicate, they dare in their sleep.

    出自-2015年考研阅读原文

    Buy all your clothes once with a stylist instead of shopping alone, one article of clothing at a time.

    出自-2016年考研阅读原文

    Kennedy once said that a country’s GDP measures “everything except that which makes life worthwhile.”

    出自-2017年考研阅读原文

    A small but vocal group of Hawaiians and environments have long viewed their presence as disrespect for sacred land and a painful reminder of the occupation of what was once a sovereign nation.

    出自-2017年考研阅读原文

    By the time Shakespeare was twenty-five, Lyly, Peele, and Greene had made comedies that were at once popular and literary; Kyd had written a tragedy that crowded the pit; and Marlowe had brought poetry and genius to triumph on the common stage - where they had played no part since the death of Euripides.

    出自-2018年考研翻译原文

    Winston Churchill once walked its corridors and Japanese emissaries met here with Secretary of State Cordell Hull after the bombing of Pearl Harbor.

    出自-2018年考研阅读原文

    收起真题例句
  • 英英释义

    Adjective

    • 1. belonging to some prior time;

      "erstwhile friend"

      "our former glory"

      "the once capital of the state"

      "her quondam lover"

    Adverb

    • 1. on one occasion;

      "once I ran into her"

    • 2. as soon as;

      "once we are home, we can rest"

    • 3. at a previous time;

      "once he loved her"

      "her erstwhile writing"

    收起英英释义
  • 词根词缀

    词根: one

    =one,表示"一"

    • adj.

      lone 孤独的, 独立的

      l+one一→adj.孤独的, 独立的

      lonely 孤独的,寂寞的

      lone[adj.孤独的, 独立的]+ly表形容词→adj.孤独的,寂寞的

      only 唯一的, 单独的

      one一+ly表形容词→adj.唯一的, 单独的

      someone 有人, 某人

      some某些+one一→adj.有人, 某人

    • conj.

      once 一旦

      one一+ce→once一次→一旦

    • n.

      loneliness 孤独, 寂寞

      lonely孤独的,寂寞的+ness表名词→n.孤独, 寂寞

    • n.&adv.

      once 一次, 从前, 曾经

      one一+ce→once一次→一旦

    • num.

      one

      one一→num.一 pron.一[个,只……]

    • pron.

      everyone 每人,人人,各人

      every每+one一→pron.每人,人人,各人

      one 一[个,只……]

      one一→num.一 pron.一[个,只……]

      oneself 自己, 亲自

      one一+self自己→pron.自己, 亲自

  • 词组搭配

    all at once

    without warning; suddenly

    突然

    all at once the noise stopped.

    突然,吵闹声停止了。

    all at the same time

    同时

    a lot of beans are ready all at once.

    同时很多豆子准备好了。

    for once (或this once)

    on this occasion only, as an exception

    就(这)一次;破例一回

    I hope you'll forgive me this once.

    我希望你就原谅我这一次。

    once a ——, always a ——

    (proverb)a person cannot change their fundamental nature

    (谚)一次…始终…

    once a whinger, always a whinger.

    曾经是把短刀,始终是把短刀。

    once again (或more)

    one more time

    又一次,再一次

    once and for all (或once for all)

    now and for the last time; finally

    一劳永逸;彻底地

    once and future

    denoting someone or something that is eternal, enduring, or constant

    永久的;持久的;持续的

    side two contains four once and future hit singles.

    第二面有四首持续走红的单曲。

    once bitten, twice shy

    side two contains four once and future hit singles.

    第二面有四首持续走红的单曲。

    once (或every once) in a while

    from time to time; occasionally

    偶然;间或

    once or twice

    a few times

    一两次

    once upon a time

    at some time in the past (used as a conventional opening of a story)

    从前(用于故事的开头)

    at once

    All at one time; simultaneously

    立刻;同时

    Everything happened at once. The view of the skyline is at once awesome, grand, and disappointing.

    所有的事都一起发生了。天边立刻呈现出令人敬畏的、壮丽的和令人沮丧的景色

    Immediately; instantly

    立即;马上

    Leave the room at once.

    马上离开这个房间

    收起词组搭配
  • 同义词

    adv.一度,一次

    occasiontimeoneagainonlyonsinglenever

    adv.从前地

    aforetimeagopreviouslytimepastatlongtheheretoforeonein

    adv.曾经,一度

    flukebyattimeeverasinglechanceany

    n.一次

    singleonlyoccasiontimeone

    其他释义

    formerlyago

  • 反义词

    again

  • 行业词典

    • 土木工程

      直流冷却水系统   once-through cooling water system   直流水系统   once-through water system   

    • 电力

      抛弃法烟气脱硫   once-through FGD process   直流锅炉   once-through boiler   

  • 常用俚语

    • once in a blue moon
      极为罕见地,难得有一次

      I do this only once in a blue moon.

      此事我只是极为偶然而为之。

      Once in a blue moon I have a little wine with dinner.

      我难得有一次在吃午饭时喝一点儿酒。

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