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Continue to Chat美國研究:醫用外科口罩與N95防護作用無明顯差異 https://blog.wongcw.com/2020/02/02/%e7%be%8e%e5%9c%8b%e7%a0%94%e7%a9%b6%ef%bc%9a%e9%86%ab%e7%94%a8%e5%a4%96%e7%a7%91%e5%8f%a3%e7%bd%a9%e8%88%87n95%e9%98%b2%e8%ad%b7%e4%bd%9c%e7%94%a8%e7%84%a1%e6%98%8e%e9%a1%af%e5%b7%ae%e7%95%b0/