And at 250 frames per second, it shows us exactly why masks work to slow airborne infection.

每秒 250 帧，这向我们展示了为什么口罩可以减缓空气感染。

But when it comes to stopping airborne infections, there's a longer-term solution that doesn't require a filter across your face, isn't there?

但对于阻止风媒传播，现在有了无需贴面过滤器的长效解决方法，不是吗？