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alert aldehyde polymer

alert
[英] [əˈlə:t] [美] [əˈlɚt] 生词本

adj.

n.

vt.

  • 柯林斯高阶英汉双解学习词典

  • 英英释义

  • 行业释义

  • 词典例句

1. ADJ-GRADED 警觉的；警惕的；留神的；机敏的 If you are alert, you are paying full attention to things around you and are able to deal with anything that might happen. 

  • We all have to stay alert...

    我们大家都必须保持警惕。

  • He had been spotted by an alert neighbour.

    一个警觉的邻居发现了他。

alertness

  • The drug improved mental alertness.

    该药有助于提神。

2. ADJ-GRADED 充分意识到…的;完全感觉到…的 If you are alert to something, you are fully aware of it. 

  • The bank is alert to the danger.

    银行充分意识到了危险。

3. N-COUNT 警戒（状态）；戒备（状态） An alert is a situation in which people prepare themselves for something dangerous that might happen soon. 

  • Due to a security alert, this train will not be stopping at Oxford Circus.

    由于安全戒备的原因，该次列车在“牛津街口广场”站将不停留。

4. VERB 向…报警；使警觉；使警惕；使注意 If you alert someone to a situation, especially a dangerous or unpleasant situation, you tell them about it. 

  • He wanted to alert people to the activities of the group...

    他想提醒人们小心该团体的活动。

  • I was hoping he'd alert the police.

    我当时希望他会报警。

5. See also: red alert;  
6. PHRASE 处于警戒状态;保持戒备 If soldiers or police are on alert, they are ready to deal with anything that may happen. 

  • Soldiers and police have been put on alert.

    士兵和警方都已进入警戒状态。

7. PHRASE 准备就绪；防备着 If you are on the alert for something, you are ready to deal with it if it happens. 

  • They want to be on the alert for similar buying opportunities.

    他们希望随时掌握有关类似购买机会的信息。

Noun

1. condition of heightened watchfulness or preparation for action;

  • "bombers were put on alert during the crisis"

2. a warning serves to make you more alert to danger

3. an automatic signal (usually a sound) warning of danger

Verb

1. warn or arouse to a sense of danger or call to a state of preparedness;

  • "The empty house alarmed him"
  • "We alerted the new neighbors to the high rate of burglaries"
Adjective

1. very attentive or observant;

  • "an alert and responsive baby is a joy"
  • "caught by a couple of alert cops"
  • "alert enough to spot the opportunity when it came"
  • "constantly alert and vigilant, like a sentinel on duty"

2. mentally responsive;

  • "an alert mind"

3. not unconscious; especially having become conscious;

  • "the patient is now awake and alert"

4. (usually followed by `to') showing acute awareness; mentally perceptive;

  • "alert to the problems"
  • "alive to what is going on"
  • "awake to the dangers of her situation"
  • "was now awake to the reality of his predicament"

计算机

  • 1.报警(信号)
  • 2.警报，报警信号
1. A good hunting dog is alert to every sound and movement around.
一只好猎犬对四周任何响动均甚警觉。

来自《简明英汉词典》

2. A monkey is very alert in its movements.
猴子的动作很敏捷。

来自《简明英汉词典》

3. A nationwide alert went out for three escaped prisoners.
全国范围內发布了警报，搜捕三名监狱逃犯。

来自《简明英汉词典》

4. A sparrow is very alert in its movements.
麻雀行动非常机灵。

来自《简明英汉词典》

5. Alert readers may have noticed the misprint in last week's column.
细心的读者可能已经注意到上周专栏中的印刷错误了。

来自《简明英汉词典》

6. Don't alert the enemy.
不要惊动敌人。

来自《现代汉英综合大词典》

7. Drivers must be on the alert for traffic signals.
驾驶员必须密切注意交通信号。

来自《简明英汉词典》

8. He has an alert mind.
他很机灵。

来自《简明英汉词典》

9. He is a man alert in problem.
他是个留意问题的人。

来自《简明英汉词典》

10. Hearing this, I was instantly on the alert.
我一听这话，当下就警惕起来。

来自《现代汉英综合大词典》

11. In our reading we should always be alert for idiomatic expressions.
我们在阅读过程中应经常注意惯用法。

来自《简明英汉词典》

12. One should not run about aimlessly during an alert.
空袭警报期间不可到处乱跑。

来自《现代英汉综合大词典》

13. The Armies were constantly on the alert not to be taken by surprise.
部队一直处于警戒状态以防突然袭击。

来自《现代汉英综合大词典》

14. The cat is alert to every sound and movement.
那只猫对任何响动都很警觉。

来自《现代汉英综合大词典》

15. The district was put on red alert during a terrorist's bomb scare.
这个地区在得到恐怖分子炸弹恐吓后作了应急准备。

来自《简明英汉词典》

16. The rabbit seems to be very alert all its life.
兔子似乎一生都小心翼翼，十分警觉。

来自《简明英汉词典》

17. The radio alert ed the citizens to prepare for the hurricane.
电台警告市民们作好预防暴风准备。

来自《现代英汉综合大词典》

18. The whole navy was placed on full alert.
整个海军都处于全面戒备状态。

来自《简明英汉词典》

19. They were constantly on the alert not to be taken by surprise.
他们一直处于常备不懈状态以防突然袭击。

来自《现代汉英综合大词典》

20. They were quiet during the alert.
警戒期间他们保持安静。

来自《现代汉英综合大词典》