托福tpo10 阅读部分 ecology最后一段You’re right to guess the Phosphorus can end up inearth atmosphere. It can move from the land or from the oceans to theatmosphere, and vice versa. However, there’s just not as
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it 就是phosphorus 阿
大意就是说虽然有phosphorus在大气层中,但数量并不是很多.