@berman_allen @nlpnyc @yaneerbaryam Source (not even "the best" cloth masks, these were very ordinary commercial cloth masks).
https://twitter.com/AeonCoin/s...
@berman_allen @nlpnyc @yaneerbaryam 来源（甚至不是“最好的”布口罩，这些都是非常普通的商用布口罩）。
https://twitter.com/AeonCoin/s...