over the course of the semester,

听到我这些话
I'm a philosopher.

我是一个哲学家
What that means is I don't really know a whole lot of facts.

也就是说我不是很懂自然科学
So I'm about to tell you a story where I wish I knew the facts.

我会说一下我这个门外汉对此的理解
I don't know the facts. If I could really do it right,

我不懂这些如果真要讲这些
I'd now open the door and bring in our guest physiologist,

可以打开门请一个客座生理学家进来
who would then provide the facts

他会讲一些理论
that I'm--what I'm about to go is "Blah, blah, blah."

对于我来说...会觉得很厌烦
But we have the physiologist come in

如果我们请来生理学家
and he'd actually tell us these things.

他会告诉我们一些知识
I don't know them. I don't have that person.

我根本不懂也不认识什么生理学家
But take a look at what happens when a body dies.

但谈到一个人死后身体会发生什么变化