Eg: The fear of flu mutate into a form that passes easily between human has seen a global race to stockpile vaccine and protective face masks.

 
  • 由于害怕流感變異后會(huì )變得容易在人群中傳染,全世界都在急著(zhù)儲備疫苗和保護性口罩。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan