名詞 nitrogen:

1. 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
   同義詞：N, atomic number 7

1. Air consists chiefly of nitrogen.
   空氣主要由氮?dú)饨M成。
2. If it were not for oxygen and nitrogen in the air, no man could live on the earth.
   大氣中如果沒(méi)有氧和氮，人就無(wú)法生存于地球了。
3. The lamp is full of gaseous nitrogen.
   燈里充滿(mǎn)了氣體氮。
4. Nitrogen forms most of the Earth's air.
   地球上空氣的大部分成分是氮?dú)狻?/div>

ni.tro.gen

n.Symbol N （名詞）符號(hào) N
A nonmetallic element that constitutes nearly four fifths of the air by volume, occurring as a colorless, odorless, almost inert diatomic gas, N2, in various minerals and in all proteins and used in a wide variety of important manufactures, including ammonia, nitric acid, TNT, and fertilizers. Atomic number 7; atomic weight 4.00'7; melting point -209.8'=C; boiling point -95.8=C; valence 3, 5. See table at element
氮：一種非金屬元素，按體積計(jì)算約占空氣的五分之四，是一種無(wú)色、無(wú)味幾乎為惰性的雙原子氣體，N2，存在于各種礦物和所有的蛋白質(zhì)中，廣泛地運(yùn)用于各種重要的生產(chǎn)中包括生產(chǎn)氨酸、硝酸、黃色炸藥以及化肥。原子序數(shù)7；原子量4.00'7；熔點(diǎn)-209.8'°C；沸點(diǎn)-95.8°C；化合價(jià)3,5 參見(jiàn) element

來(lái)源：
French nitrogène
法語(yǔ) nitrogène
nitro- [nitric acid] from New Latin * see nitro-
nitro- [硝酸] 源自 現(xiàn)代拉丁語(yǔ) *參見(jiàn) nitro-
-gène [-gen]
-gène [生，被生]

【引伸】
nitrog.enous