@Backtotravel22 @MichaelSFuhrer Right, that's why I said implausibly. 20% is everyone using masks as people realistically use them around the world (e.g. not in pubs, etc.)
@Backtotravel22@MichaelSFuhrer对，这就是为什么我说得难以置信。20%的人都在使用口罩，因为全世界的人都在实际使用口罩（例如，不在酒吧等）