If we flip the brain on its back -- I love this little bit of spinal cord here -- this bit here is the hypothalamus, and right under there is a whole raft of interesting structures, not least the biological clock.
如果我们看大脑的后面—— 我喜欢这个，这是脊髓 这个点是下丘脑 在这下面是一个有趣的结构， 尤其是生物钟。