CookingKillsFourMillionPeopleaYearPollutedairborneparti...
問題詳情：CookingKillsFourMillionPeopleaYearPollutedairborneparticles（大氣懸浮顆粒）kill7millionpeopleayear,reportstheWorldHealthOrganization.Thatnewsmaynotcomeasasurprisetoanyonewhohasseenimagesofchimneys...