我想告诉你们有关人口数量的过去、现在和未来。那么让我们从一些问题入手。

I want to tell you about the past, present and future of the human population. So let's start with a few problems.

youdao

那么让我们去植树吧。

Let's go to plant trees then.

youdao

那么让我们从理想的情况开始。

So let's start with the ideal case.

youdao

So let me go back up here, and I'm going to comment out that region, and let's uncomment this region.

那么让我们回到这里，我会为这个区域添加注意，让我们先取消注释。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now let's think about designing the experiment itself. The goal here, there are two goals. Or more than two.

那么现在让我们来想想,怎么设计实验本身吧，这里有两个目标，或者多于两个目标。

麻省理工公开课 - 计算机科学及编程导论课程节选

So,the editors just buy--completely buy--the text's own mythology and produce all this apparatus around it to help us believe it, too.

所以这个编辑把原稿中的所有想象都保留了,而且说出那么一个有关联的装置让我们更信服。

耶鲁公开课 - 1945年后的美国小说课程节选