nitrogen 'naitrәdʒәn
释义
n. 氮
[化] 氮N-2
英文释义
n. a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
词形变化
复数: nitrogens
BNC词频排名: 6,287 | 当代语料库词频排名: 5,881