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to phrases
primary pollutants
oil
原生污染物
primary pollutant
ecol.
一次污染物
指直接危害环境的污染物质,称为一次污染物
interntl.trade.
一次污染物
tech.
原发性污染物
;
一级污染物
;
初始污染物
;
初级污染物
;
初次污染物
wind.
原生污染物
primary pollutants
:
3 phrases
in 2 subjects
Desert science
1
Technology
2
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