首页英语词典caffeinecaffeine的意思

caffeine怎么读？

caffeine

英 ['kæfiːn] 美['kæfin]

英英释义考试真题实用场景例句

n. [有化][药] 咖啡因；茶精（兴奋剂）

扩展词汇低频词CET6+

助记提示

1. 音译“咖啡因”。

中文词源

caffeine 咖啡因

来自cafe, 咖啡。-ine, 化学后缀，见cocaine.

英文词源

caffeine: caffeine: see coffee
caffeine (n.): trimethyl-derivative of xanthine, 1830, from German Kaffein, coined by chemist F.F. Runge (1795-1867), apparently from German Kaffee "coffee" (see coffee) + chemical suffix -ine (2) (German -in). The form of the English word may be via French caféine.

双语例句

1. 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。

2. The caffeine in coffee can jangle the nerves.: 咖啡中的咖啡因会使神经紧张。

3. Caffeine can cause palpitations and headaches.: 咖啡因会引起心悸和头痛。

4. 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。

5. 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。