你即將離開本站

並前往https://www.cdc.gov/coronavirus/2019-ncov/science/science-briefs/masking-science-sars-cov2.html

Use of Masks to Control the Spread of SARS-CoV-2 - CDC

A section was added on mask wearing among children. On This Page. Background; Source Control to Block Exhaled Virus; Filtration for Wearer Protection.

確定！ 回上一頁

查詢 「Brief on」的人也找了：

  1. brief on中文
    2.
  2. brief用法
    3.
  3. brief中文用法
    4.
  4. In brief
    5.
  5. Make a brief
    6.
  6. Briefing
    7.
  7. brief動詞
    8.
  8. brief簡報
    9.