Citiesneedtoputeffortstodealwithpollutionandcleartheair...
問題詳情：Citiesneedtoputeffortstodealwithpollutionandcleartheair.Chinesecitieswillneedtoputeffortstoclearuptheskywhenanewdepartmenttoimproveregionalairqualityissetupby2015,accordingtothelatestplanrelea...