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oxygen 'ɒksәdʒәn

CET4 高考会考考研 TOEFL 柯林斯2⭐

释义

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

复数: oxygens

BNC词频排名: 3,719 | 当代语料库词频排名: 3,839