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