由此，我通过想象医生对你说，你该如何来治愈自己的疾病这个画面来理解“医生”和“说”之间的联系。

Here I’m imagining a connection based on the doctor speaking to you about what you have to do to heal yourself.

youdao

你恋上了比你大两岁的她，也许我们作为你的粉丝该祝福你们，但是当看到你那些丑态时，我无法理解了是她带坏了你，还是你学坏了。

You love on the two years older than you, she maybe we as fans this blessing you, but when see you those - I can't quite understand is she took bad you, or you something goes wrong.

youdao

丽塔：好吧，我该怎么办？我要去跟他解释吗？你觉得他能理解吗？

Rita: OK, what should I do? Should I go and explain everything to him? Do you think he can understand?

youdao

And actually, a question that might come up, I just explained, the sodium channel, you might say, well, how do potassium channels work then, because I can understand how you can filter something big out, but how do you filter out something small.

实际上，可能大家会问一个问题，我刚解释过，钠离子通道，你可以说，好吧，那么钾离子通道该如何起作用呢，因为我可以理解你是如何把大东西过滤掉的，但是你如何把小东西过滤掉呢？

麻省理工公开课 - 化学原理课程节选