口罩「雙層戴、打結」誰有效？住院醫曝正解

資料來源: https://www.nownews.com/news/5271872?from=nnln_push&utm_source=ln&utm_medium=nn&utm_campaign=push

https://www.youtube.com/watch?v=GzTAZDsNBe0

教學影片:

心得: 臉大超難帶， 哈哈