Now the question you'd need to ask yourself is how do you know this didn't happen to you last night?

现在你要问自己的问题是,你怎么知道,昨晚你没发生这样的事？

耶鲁公开课 - 死亡课程节选

That didn't happen to me -- once I got into the lab, I didn't want to leave. So, I thought, "You know what, I think I'll change the medical school plans and now I'm going to go all the way -- chemistry major, chemistry grad school."

这很好，但我不是这样，我一进入到实验室就不想离开了，所以我想“你知道吗,我想把我学习医学的计划改成化学-,我要学化学专业，读化学研究生“

麻省理工公开课 - 化学原理课程节选

Even though some defenders of that particular movement claim it didn't happen, like David Brooks tried to claim in The New York Times.

尽管一些参与这些运动的人辩护,说事实并非如此,如戴维·布鲁克斯在《纽约时报》的文章

耶鲁公开课 - 美国内战与重建课程节选

If they started looking like insurrection would happen, the Romans didn't do it.

如果叛乱要发生了，罗马人不会坐视不理。

耶鲁公开课 - 新约课程节选

How do you know, not only that it didn't happen to you last night?

你怎么知道，只是昨晚没有发生？

耶鲁公开课 - 死亡课程节选

If nothing bad happens, it means what didn't happen is good.

没有消息就是好消息。

哈佛公开课 - 计算机科学课程节选

And that didn't happen with smallpox.

天花则不会这样

耶鲁公开课 - 生物医学工程探索课程节选

Having learned, or having agreed, let's say, with my prejudice, which is that the Higher Naivete must reign -and if the Greeks said it happened, you got to believe it happened, until you have to believe that it didn't happen.

以我的成见,他已经达到或认同,"高级天真",如果古希腊人说确有其事,你要相信它确实发生,除非你不得不相信它其实并未发生过

耶鲁公开课 - 古希腊历史简介课程节选

And that's why all those reactions, first of all, in some sense what I put up was kind of a trivial statement in actual fact saying they all happen spontaneously because I didn't specify what we were starting with exactly, what concentrations we were starting with.

首先这就是为什么所有的这些方程，在某种程度上,我举得这些例子说它们自发产生,这是一个琐碎的陈述,因为我没有说明，我们从什么地方开始。

麻省理工公开课 - 热力学与动力学课程节选

So let's imagine we're playing the game again, once again you're going to the movies, once again the first one didn't happen so you didn't for some reason it was cancelled that night because someone had a bad cold or something.

我们再来进行一次这个博弈,假设你们又要一起去看电影,由于种种原因,第一天晚上你们都没有看成,假装因为有一个人感冒了

耶鲁公开课 - 博弈论课程节选

In contrast, if we talk about a double bond, what we're now talking about is having both a sigma bond and also one pi bond. And I apologize, I intended to set this up right before class, but that didn't happen today.

相反，如果我们讨论一个双键，我们现在讨论的是,一个sigma键和π键，抱歉，我应该在课前就把这个装好的，今天没装好。

麻省理工公开课 - 化学原理课程节选

Imagine--this didn't, of course, actually happen, but imagine--the crucial point here is simply that we can imagine this story happening, not even that we think it's empirically possible, just it's conceivable, it's an imaginable story.

想象,当然,实际上并没发生,最关键的地方就是想象,故事因此而产生,别去想实际上是否可能发生,只需要一点想象,这是个虚构的故事

耶鲁公开课 - 死亡课程节选