nitrogen

名詞

1. 1

   氮、氮氣

   Nitrogen makes up about seventy-eight percent of the air we breathe.

   氮約佔我們所呼吸空氣的百分之七十八。

2. 2

   氮、氮肥農業

   The soil here lacks nitrogen, so the crops grow slowly.

   這裡的土壤缺氮，所以作物長得很慢。