![Sincethebeginningoftheyear,smoghascoveredpartsofNorthCh...]( "Sincethebeginningoftheyear,smoghascoveredpartsofNorthCh...")
- 問題詳情：Sincethebeginningoftheyear,smoghascoveredpartsofNorthChina.InJanuary,Beijingsawonlyfivedayswithoutsmog.TherisingPM2.5readingsterrifiedmanypeople,andsomehealthexpertssaidthatwheneverthesmoggetsserious,hospitalsreceivemorepatientssufferingacute...
- 28805
中文谷