What are the various adaptations of the fetal circulation?

胎儿循环有哪些不同的适应？

So, why does the fetal circulation need to be special?

那么，为什么胎儿循环这么特殊呢？

Why does the fetal circulation need to be special, what does the oxygen dissociation curve look like?

为什么胎儿循环这么特殊，氧解离曲线是什么样子的？

Which means, what I can do is I can, for example, if I go into fetal circulation, what I've done is I've written questions for myself.

这意味着，我能做的是，例如，如果我进入胎儿循环的内容，我只需要给自己出题。