| 正面 | 4781.chemistry 英 ['kemɪstrɪ]美 ['kɛmɪstri]     |
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| 背面 |      释义： 1. 一个早死他.2. exhaust 耗尽，用完 “用完了就应该砸死它”3. 兔死狗烹，鸟尽弓藏。n. 化学；化学过程 例句： 1. The Oxford Chemistry Primers aim to cover important topics in organic chemistry.《牛津化学初级读本》丛书旨在论述有机化学中的重要问题。 chemistry 化学来自chemist. chemistry (n.)c. 1600, "alchemy," from chemist + -ry; also see chemical (adj.). The meaning "natural physical process" is 1640s, and the scientific study not so called until 1788. The figurative sense of "instinctual attraction or affinity" is attested slightly earlier, from the alchemical sense." |