In certain stages of sleep, we trim and prune connections between cells and erase unneeded memory circuits.

在睡眠的某些阶段，我们修剪细胞之间的连接并清除不需要的记忆回路。

And without sleep, the memory circuits of the brain essentially become waterlogged, as it were, and you can't absorb new memories.

如果没有睡眠， 大脑的记忆回路基本上会变得水浸，你无法吸收新的记忆。