nitrogen
Every tonne of coal contains, on average, 30 kilograms of nitrogen.
每吨煤平均含30公斤氮。
—— 给力词典精选The plant requires nitrogen in order to make proteins.
植物需要氮以便制造蛋白质。
—— 给力词典精选What is the percentage of nitrogen in air?
空气中所含的氮的比例是多少?
—— 给力词典精选Nitrogen is a gas without colour or smell.
氮是一种无色无臭的气体。
—— 给力词典精选The faeces contain nitrogen and it is that which fertilises the desert soil.
粪便含氮,而正是氮可以肥化荒芜的土地。
—— 柯林斯例句