translation.en: Yet in the same animal, if we wait just a little while until it's gone to sleep, what we see is that the CSF is rushing through the brain, and we discovered that at the same time when the brain goes to sleep, the brain cells themselves seem to shrink, opening up spaces in between them, allowing fluid to rush through and allowing waste to be cleared out.
translation.zh: 然而同样是这只老鼠 如果我们稍稍等待一下，到它睡着 我们就可以看到脑脊液 在大脑里快速地流动 同时我们发现， 在大脑即将睡着的时候 脑细胞看起来变小了 这样，细胞之间就产生了空隙 这些空隙得以让脑脊液流动， 也让废物被清除了。