Those are the sorts of things we need to break down the statistics the billion people in poverty.

我们需要用这些事例,让人们对几十亿人口,这样一个数据有具体的认识。

普林斯顿公开课 - 人性课程节选

First, using a couple of examples that have turned out to be very important, one is the example of smallpox, and the second is the example of polio.

首先,举两个重要的事例,其中一个例子是天花,另一个是小儿麻痹症

耶鲁公开课 - 生物医学工程探索课程节选