短語(yǔ)詞組短語(yǔ)air pollution source emission 空氣汙染源排放;空氣汙染源排放物stationary air pollution source 固定性空氣汙染源indoor air pollution source 室內(nèi)汙染源industrial air pollution source 工業(yè)大氣源urban air pollution source 城市空氣汙染源To reduce air pollution source 從而減少空氣汙染來(lái)源source air pollution 空氣汙染源 返回 air pollution source