And that's actually my eye, and again this video was taken right after my daughter was born, so you can see I wasn't getting too much sleep.  Even when a person is sitting still, there's a lot of information we can extract about their breathing patterns, small facial expressions.
这实际上是我的眼睛， 同样，这段视频拍摄于我女儿出生不久之后， 所以你可以看到我睡得不多。 即使当人在静止坐着， 我们也可以提取许多信息 如呼吸节律，面部表情微小变化。