Just to say a little bit about smallpox, because unlike chickenpox, which if you haven't had, you've probably seen a case of it.

我们稍微说一下天花,因为它不像水痘那样,就算你没得过你也见过

耶鲁公开课 - 生物医学工程探索课程节选

Because didn't you say you could do things like just %f?

因为你没有说你可以写像%f这样的？

哈佛公开课 - 计算机科学课程节选