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  • 简明
  • 柯林斯
  • 牛津

  • caffeine

    • 英 [ˈkæfiːn]
    • 美 [ˈkæfiːn]

    释义

    • n.
      [药]咖啡因; 咖啡碱; 茶精（兴奋剂）

    点击 人工翻译，了解更多 人工释义

  • 实用场景例句

    • 全部
    • 咖啡因
    • 咖啡碱

    Stay away from caffeine in the afternoon and evening.

    在下午和晚上避免接触咖啡因.

    期刊摘选

    The assay of theobromine and caffeine mother solution of theobromine is determined by HPLC.

    控制提取工艺需要测定柯柯豆碱母液中柯柯豆碱、咖啡因的含量.

    期刊摘选

    In fact, I never knew how much caffeine I had drunk.

    其实我以前根本都不知道喝了多少.

    期刊摘选

    Downing caffeine can be easier, quicker, and socially more eptable in many ways.

    喝杯咖啡可能更容易 、 更快 、 而且在很多方面更容易让社会接受.

    期刊摘选

    Avoid alcohol and caffeine, which can contribute to depression and anxiety.

    避免饮酒和食用咖啡因, 它们可导致抑郁和焦虑.

    期刊摘选

    In addition, no caffeine, not affect sleep. Bubbles may 10 times more.

    此外, 本产品不含咖啡因, 不影响睡眠. 每袋可沏泡10次以上.

    期刊摘选

    Caffeine and other stimulants cannot overcome the effects of severe sleep deprivation.

    咖啡因和其它兴奋剂不能克服严重睡眠剥夺的影响.

    期刊摘选

    Caffeine makes people nervous and unsleeping.

    咖啡因是人们紧张和难以入睡.

    期刊摘选

    Avoid caffeine or alcohol; memorise your shopping list.

    避免饮用咖啡因或酒精饮料; 回忆你的购物清单.

    期刊摘选

    They afield appeal mainly to young people andare fueled mainly by caffeine.

    它们主要针对青年人,依靠咖啡因来让人提神.

    期刊摘选

    Researchers found that caffeine did indeed heighten the pressure felt.

    研究者发现咖啡因确实会增强压迫感.

    期刊摘选

    Research by Australian scientists has found that many teenagers are affected by caffeine.

    澳大利亚科学家的研究表明,咖啡因对许多孩子造成了影响.

    期刊摘选

    Caffeine can inhibit lung pant for parasympathetic nerve, reduce asthma attacks.

    定肺喘咖啡因会抑制副交感神经, 减少气喘病的发作.

    期刊摘选

    Shaw's lab previously showed that they can use caffeine and methamphetamine to keep flies awake.

    肖博士之前的研究表明咖啡因和脱氧麻黄碱可用于维持果蝇的清醒状态.

    期刊摘选

    The product has 50 per cent less caffeine than regular Nescafe instant coffee.

    这种产品的咖啡因含量比普通的雀巢速溶咖啡少一半.

    期刊摘选

    It was awful but for what it cost I drank it anyway to get the caffeine.

    这是可怕的,但它的成本i喝它无论如何得到咖啡因.

    期刊摘选

    Caffeine is a stimulant which acts on the nervous system.

    咖啡因是一种对神经系统产生影响的兴奋剂.

    期刊摘选

    It also means maintaining a approach to things like alcohol and caffeine.

    这也意味着对于像酒精和咖啡因的东西要适可而止.

    期刊摘选

    Using 1 % calcium oxide has more single caffeine production rate, extraction rate and purity.

    1%氧化钙水溶液单纯提取咖啡因的得率 、 提取率和纯度较高.

    期刊摘选

    Caffeine restriction and aerobic exercise often reduce symptoms.

    限制咖啡和增氧健身运动可以减轻症状.

    期刊摘选

    Avoiding caffeine also may help reduce anxiety.

    远离咖啡因也能降低焦虑.

    期刊摘选

    Which foods and beverages contain caffeine?

    哪些食物、饮料中含有咖啡因?

    期刊摘选

    The caffeine in coffee can jangle the nerves.

    咖啡中的咖啡因会使神经紧张。

    柯林斯例句

    As a rule of thumb, a cup of filter coffee contains about 80mg of caffeine.

    凭经验估计，一杯过滤咖啡约含80毫克咖啡因。

    柯林斯例句

    As little as 50mg of caffeine can produce pharmacological effects.

    仅仅50毫克的咖啡因就能产生药理效果。

    柯林斯例句

    The shaking inside may be due to low blood sugar, too much caffeine or too many cigarettes.

    心悸可能是由于低血糖、咖啡因过量或抽烟过多。

    柯林斯例句

    Caffeine can cause palpitations and headaches.

    咖啡因会引起心悸和头痛。

    柯林斯例句

    收起实用场景例句

  • 真题例句

    • 全部
    • 四级
    • 六级

    Caffeine, a substance found in coffee and some soft drinks, is also a drug.

    出自-2015年12月听力原文

    The caffeine—the equivalent of two strong cups of coffee, was sufficient to reverse this effect, with some cyclists even displaying increased eye movement speeds.

    2017年6月四级真题（第三套）阅读 Section A

    To find out, researchers gave 11 volunteer cyclists a carbohydrate solution either with a moderate dose of caffeine,  which is known to stimulate the central nervous system, or as a placebo without, during 3 hours of cycling.

    2017年6月四级真题（第三套）阅读 Section A

    In West Africa, people have long chewed kola nuts as stimulants, because they contain caffeine that also occurs naturally in tea, coffee, and chocolate.

    2017年12月六级真题（第一套）阅读 Section C

    So there could be less protein, more sugar and some additives you wouldn't expect, such as caffeine.

    2019年12月六级真题（第二套）阅读 Section B

    收起真题例句

  • 英英释义

    Noun

    • 1. a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
    收起英英释义

  • 词根词缀

    后缀: -ine

    1. 表形容词,"……的"; 2. 表名词,"状态,药物等"; 3. "物体"; 4. 表名词,"人或女人"

    • adj.

      canine 犬的,犬科的

      can狗+ine……的→adj.犬的,犬科的

      elephantine 笨拙的,巨大的

      elephant大象+ine……的→adj.笨拙的,巨大的

      marine 海的,海生的;船舶的,航海的

      mari海+ine……的→marine海的,海生的

      pristine 太古的,纯洁的,新鲜的

      prist=first首先,最初+ine……的→adj.太古的,纯洁的,新鲜的

      routine 常规的,例行的

      route路线,路程+ine……的→adj.常规的,例行的

      saturnine 忧郁的,阴沉的

      saturn魔鬼+ine……的→adj.忧郁的,阴沉的

      serpentine 似蛇般绕曲的,蜿蜒的

      serpent蛇+ine……的→adj.似蛇般绕曲的,蜿蜒的

    • n.

      antifebrine [化]乙醯胺苯,退热冰

      anti反+febr热+ine状态,药物等→n.[化]乙醯胺苯,退热冰

      caffeine 咖啡因

      caffee咖啡+ine状态,药物等→caffeine→咖啡因

      famine 饥荒,饥馑

      fam饿+ine状态,药物等→n.饥荒,饥馑

      iodine 碘,碘酒

      iod碘+ine状态,药物等→n.碘,碘酒

      routine 例行公事,常规

      route路线,路程+ine状态,药物等→routine常走的路线→常规

      vaseline 凡士林,凡士林的商标名

      vasel+ine状态,药物等→由商标名转化而来

      concubine 小老婆,妾,情妇

      con一起+cub躺+ine人或女人→一起躺着的人→情妇

      figurine 小塑像,小雕像

      figure形体,蒴像+ine人或女人→figurine小塑像

      heroine 女英雄;女主角

      hero英雄+ine人或女人→n.女英雄;女主角

      philistine 庸人,市侩

      philist菲力斯人+ine人或女人→n.庸人,市侩

  • 同义词

    stimulant

  • 行业词典

    • 医学

      〔USP〕咖啡因：无臭、苦味的白色粉末，化学式C8H10N4O2，一种黄嘌呤(参照xanthines)。溶解于水和乙醇，可以从咖啡、茶叶、瓜拉那(巴西可可)和巴拉圭茶(冬青茶)中获得。咖啡因兴奋中枢神经系统，主要作用于大脑，有利尿作用   刺激横纹肌   对心血管系统有多种作用，咖啡因用作中枢和呼吸兴奋药，用于解除头痛，可口服给药   咖啡因和苯甲酸钠的混合水溶液，供肠道外注射使用   

  • 释义
  • 实用场景例句
  • 真题例句
  • 英英释义
  • 词根词缀
  • 同义词
  • 行业词典