faecal matter造句怎么写
- 造句
- 关注:3.12W次
In the top 200 metres or so of the sea, some dead or faecal matter is turned back into CO2 by microbes and may then re-enter the atmosphere.
They could train farmers to allow the sediment to settle out of the wastewater before using it-thereby avoiding the worst of the faecal matter.
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