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一次污染
oil
primary pollution
一次污染
从生产或生活各污染源向大气、水域或土壤中排放污染物质，能直接造成污染，从而对生物及物体产生危害，称为一次染污
ecol.
primary pollution
一次污染:
4 phrases
in 3 subjects
Ecology
1
Economy
1
International trade
2
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