音标:['kæfi:n] ; 柯林斯词典等级:1 级;
n. 咖啡因, 咖啡碱
[化] 咖啡因; 咖啡碱
n. a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects
词型变化:名词复数形式 : caffeines
词性分布:
名词100%

caffeine的用法和样例:

例句

用作名词(n.)
  1. Now there are cola drinks without caffeine.现在也有不含咖啡因的可乐类饮料。
  2. I'm trying to cut down on sugar and caffeine.我决定减少对糖和咖啡因的摄取量。
  3. Caffeine makes people nervous and unsleeping.咖啡因是人们紧张和难以入睡。

词汇搭配

  • caffeine sodium salicylate水杨酸钠咖啡因...
  • caffeine phenate咖啡因苯酚盐...
  • caffeine poisoning咖啡因中毒
  • caffeine phosphate磷酸咖啡因
  • caffeine salicylate[医] 水杨酸咖啡因...
  • caffeine benzoate苯甲酸咖啡因...
  • caffeine citrate枸橼酸咖啡因...
  • caffeine chloral[医] 咖啡因氯醛...
  • caffeine hydrochloride盐酸咖啡因
  • caffeine sodio-benzoate苯甲酸咖啡碱钠...
  • ergotamine caffeine麦角胺咖啡因...
  • caffeine acetate乙酸咖啡因
  • caffeine carbolate咖啡因苯酚盐...
  • aspirin phenacetin caffeine复方阿司匹林...
  • caffeine sodium benzoate安钠咖
【近义词】

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发表于:2019-01-12 / 阅读(71) / 评论(0) 分类 2013年VOA慢速英语(三)月

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