caffeine 的英语意思
caffeinecaffeine /ˈkæfiːn $ kæˈfiːn/ noun [uncountable] 
查看全部语言翻译 a substance in tea, coffee, and some other drinks that makes you feel more active茶、咖啡及某些其他饮料中使人感到更有精神的物质: 
Avoid caffeine (=drinks with caffeine) before bedtime.睡前避免摄入咖啡因（=含咖啡因的饮料）。 a caffeine-free cola无咖啡因可乐—caffeinated /ˈkæfɪneɪtɪd/ adjective
查看全部语言翻译 a substance in tea, coffee, and some other drinks that makes you feel more active茶、咖啡及某些其他饮料中使人感到更有精神的物质: Avoid caffeine (=drinks with caffeine) before bedtime.睡前避免摄入咖啡因（=含咖啡因的饮料）。 a caffeine-free cola无咖啡因可乐—caffeinated /ˈkæfɪneɪtɪd/ adjective