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俄罗斯科学家最近发现,一种新型材料可杀死流感病毒,他们希望能将这种材料用于制造口罩,帮助人们抵御流感病毒和新型冠状病毒的侵袭。Scientists hope a material which they say can kill bacteria and viruses could be used in face masks to help tackle the outbreak of the novel coronavirus.The material features nanosilver(纳米银),w