Air pollution comes from smoke,and where does dust come from?這句話什么意思空氣污染來自于濃煙，那么塵埃又是從何而來的呢?那么您能告訴我Air pullution comes from smoke and dust from power stations.這句話的意思嗎Air pullution comes from smoke and dust from power stations.空氣污染來自于濃煙，灰塵來自發(fā)電廠。