關於Airpollutionsuchasha的百科

•      Airpollution,suchashaze,hasbecomeaseriousproblemar...

• 問題詳情：     Airpollution,suchashaze,hasbecomeaseriousproblemaroundtheworld.Besideswearingamask,whatelsecanwedotoprotectourselvesfromthedirtyair?   Scientistshavedevelopedanewinhaler(吸入劑)thatcanreducetheeffectairpollutionhasonpeople.Itcoul...
• 2020-10-114855