| 单词 | caffeine |
| 释义 | Word Frequency caffeine or caffein (ˈkæfiːn, ˈkæfɪˌiːn) noun a white crystalline bitter alkaloid responsible for the stimulant action of tea, coffee, and cocoa: a constituent of many tonics and analgesics. Formula: C8H10N4O2 See also xanthine (sense 2)Word origin C19: from German Kaffein, from Kaffee coffee |
| 随便看 |
英语词典包含233703条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。