记忆方法
1. 音译“咖啡因”。
看到不对的地方请告诉我们
词族 · caffeine
词形变化
中文词源
caffeine 咖啡因
来自cafe, 咖啡。-ine, 化学后缀，见cocaine.
英语词源
- 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.
权威例句
- 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。