短語詞組短語low pollution power source 低汙染動力源pollution n source 汙染源Limit pollution at source 防止汙染優(yōu)於汙染治理point pollution source 點汙染源air pollution source emission 空氣汙染源排放;空氣汙染源排放物investigation of pollution source 汙染源調(diào)查water pollution source [環(huán)境]水汙染源agricultural pollution source 辳業(yè)汙染源key pollution source 重點汙染源 返回 pollution source