@redbaybound @jolly1766 @jimhubbell6177 @RadioFreeTom The pie-in-the-sky theory of everyone using N95s diligently might be better than 20%, but we don't really know, it hasn't been studied at the population-wide level.
@redbaybound@jolly1766@jimhubbell6177@RadioFreeTom每个人都在努力使用N95的空中派理论可能比20%要好，但我们真的不知道，它还没有在人群层面上进行研究。