Nitrogen in the atmosphere is harmless in its inert state, but the report says reactive forms of nitrogen, largely produced by human activity, can be a menace to the natural world.
大气中的惰性氮是无害的,但报告说主要由人类活动产生的活性氮可能危害自然界。
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Nitrogen, which, makes up about 78% of the Earth's atmosphere, is an inert gas but it has more reactive forms.
虽然组成地球大气78%的氮是一种惰性气体,但它却有多种化学式。
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Connectedness at Diigo is rather more interesting than at most sites in that the atmosphere is a "thinking" one rather than a reactive one.