A vegetable alkaloid crystallizing in white silky needles, found in the leaves and seeds of the coffee and tea plants, the leaves of guarana…
首页 英汉 汉英 英英 词组 用法 例句 同义词 写作 俚语 缩写 词源 词根 法汉 德汉 日汉 俄汉 韩汉 西汉 意汉 泰汉 越汉
| 单词 | θ69904 |
| 释义 | the world > matter > chemistry > organic chemistry > alkaloids > [noun] > caffeine (3) caffeine1830 A vegetable alkaloid crystallizing in white silky needles, found in the leaves and seeds of the coffee and tea plants, the leaves of guarana… theine1838 A vegetable alkaloid, originally thought to be a principle peculiar to tea, but found to be identical with caffeine, n. Subcategories:— substance resembling (1) |
| 随便看 |
|
英语词典包含1132095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。