| 单词 | atomic number 33 |
| 释义 | atomic number 33 (extremely rare) n WORD FAMILY atomic number 33 n a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar Syn|Hyper As, arsenic chemical element, element any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
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