| 词汇 | hydrogen |
| 词根词缀 | 词源： 1791, from Fr. hydrogène, coined 1787 by G. de Morveau from Gk. hydr-, stem of hydros "water" + Fr. -gène "producing." So called because it forms water when exposed to oxygen. Hydrogen bomb first recorded 1947; shortened form H-bomb is from 1950. 词根记忆： n. 氢Her boyfriend fed a box of oxygen and hydrogen to the ox and fox.她男朋友给牛和狐狸喂了一盒子氧和氢. |
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