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man-made pollution
man-made pollution
UN ecol.
人为污染
|
source
source
gen.
本
;
来源
hydroel.st.
源头
;
源点
met.
起源
;
原因
;
成因
plann.
始点
semicond.
源区
to phrases
man-made pollution
UN, ecol.
人为污染
man-made pollution
:
8 phrases
in 4 subjects
Ecology
2
Oil / petroleum
1
Technology
4
Water resources
1
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