Today look back at the first flights of the Apollo program designed to land humans on the moon.

VOA: special.2009.07.08

What America do we see? I'm going to look back to a passage I talked about in a different vein last time, on 26 and 27, just for one quick example.

看到什么了呢？，我们看到了什么样的美国？，我想回到,上一次讲另一个脉络时讲到的段落，在26到27页。

耶鲁公开课 - 1945年后的美国小说课程节选

now let's go back to each of our individual steps and look, based on what we know about how to evaluate the thermodynamic changes that take place here, let's look at each one of the steps and see what happens.

让我们回到循环中的每一步,然后看看，基于我们已有的知识,来估计一下,发生的热力学变化，让我们看,循环中的每一步发生了什么。

麻省理工公开课 - 热力学与动力学课程节选

The elephants look up and watch as your boat turns away and you head back to camp at the end of another day on safari in Africa.

VOA: special.2009.08.19

But I imagine that after a period, there'd be this-- Well, humans have this ability to look down on their experiences, or step back from their experiences, and assess them.

但我想经过一段时间后-,人类有能力审视自己的体验，或从体验中抽身而出加以评估。

耶鲁公开课 - 死亡课程节选

As Andrew Johnson prepared to leave the White House a few months after Grant's election, he would look back on some successes during his time as president.

VOA: special.2010.02.11

So nevertheless, even having given you that historical example, we're going to come back and we'll look later on in the class at a model in which politicians cannot choose their positions, but, rather, you know their positions ahead of time.

尽管如此,尽管我列举了一个历史上的例子,我们还是要回到课堂上来,我们接下来要来探讨一个,政客不能自己选立场的模型,但是当然你们可以提前获知他们的立场

耶鲁公开课 - 博弈论课程节选