caffeine
大学
FREQ #12966
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n. 咖啡因, 咖啡碱 [化] 咖啡因; 咖啡碱
发音
US
/ˈkæfiːn/
词形变化
caffeines
复数
caffeines
别名
caffeina
caffiene
caffein
教材释义与例句
名词
咖啡因;茶精(兴奋剂)
释义与例句
n.
-
1.
An alkaloid, C₈H₁₀N₄O₂, found naturally in tea and coffee plants, which acts as a mild stimulant on the central nervous system.
咖啡因
咖啡碱
不可数
词汇关系
相关短语
词源
Borrowed from French caféine, from café (“coffee”), or German Caffein, Kaffein (cp. Coffein, Koffein), from Kaffee (“coffee”) (cp. Kaffe, Koffee, Koffe), or Italian caffè (“coffee”) + -ine.
来源:wiktionary