单词
caffeine
英 ['k?fi?n]
美['k?fin]
基本信息
- 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。
来自柯林斯例句
- 2. The caffeine in coffee can jangle the nerves.
- 咖啡中的咖啡因会使神经紧张。
来自柯林斯例句
- 3. Caffeine can cause palpitations and headaches.
- 咖啡因会引起心悸和头痛。
来自柯林斯例句
- 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。
来自柯林斯例句
- 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。
来自柯林斯例句
caffeine相关单词