单词
caffeine
读音
ˈkæfiːn
美式 kæˈfiːn
英式 ˈkæfiːn
词根
无
释义
["n. [有化][药] 咖啡因；茶精（兴奋剂）"]
例句
Caffeine can cause palpitations and headaches.
咖啡因能引起心悸和头痛。
Tea contains caffeine. It's bad for your health.
茶含有咖啡因，对你的健康不利。
It is a well-known fact that caffeine is a stimulant.
咖啡因是兴奋剂，这是人所共知的事实。
In West Africa, people have long chewed kola nuts as stimulants, because they contain caffeine that also occurs naturally in tea, coffee ,and chocolate
Caffeine can cause palpitations and headaches.
咖啡因能引起心悸和头痛。
Tea contains caffeine. It's bad for your health.
茶含有咖啡因，对你的健康不利。
It is a well-known fact that caffeine is a stimulant.
咖啡因是兴奋剂，这是人所共知的事实。
In West Africa, people have long chewed kola nuts as stimulants, because they contain caffeine that also occurs naturally in tea, coffee ,and chocolate
强化记忆
无
看视频学发音
even though they only contain a diuretic, a pain relieverand caffeine.Now, far be it from me to argue with the magical powers of caffeine,
(Music)Let's start with caffeine.Caffeine is in a class of drugs
But there are at least two additional,hidden features of caffeinethat some people may not be aware of.
when you run a race,drink too much caffeineor catch the eye of the one you love.
The first is the duration of action of caffeine.Caffeine, for the average adult,will have what we call a half-life
所属分类
大学,出国,专升本-自考,其他
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