CookingKillsFourMillionPeopleaYearPollutedairborneparti...
问题详情：CookingKillsFourMillionPeopleaYearPollutedairborneparticles（大气悬浮颗粒）kill7millionpeopleayear,reportstheWorldHealthOrganization.Thatnewsmaynotcomeasasurprisetoanyonewhohasseenimagesofchimneys...