translation.en: But our most surprising finding was that all of this, everything I just told you about, with all this fluid rushing through the brain, it's only happening in the sleeping brain.
translation.zh: 但是，刚刚我所讲的这一切当中 最最让我们感到 惊奇的是 大脑中所有这些液体的工作状态， 只出现在睡眠时的大脑中！