"My brother and I were talking about how - normally you do not just walk up to a temple or a synagogue and say, 'hey,can I come in and take a look?' So this is a great opportunity and exposes me to a lot of things that I would not otherwise have been exposed to,"

VOA: standard.2009.10.19

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