oxygen
'ɒksәdʒәn
基本解释
n. 氧
[化] 氧O-2
英文释义
n. a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
词形变化
上一个单词：oxyfluorides
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