相关stillcoverednorthand的文学知识

问题详情：BEIJING—Heavyhaze(霾)stillcoverednorthandeastChinaonSaturday,withhighwaysclosedandflightsdelayedorcanceled(取消).Thesmoggyweatheraffectedthecountry’slandfromnorthtosouth,includingBeijing,Heb...