We don't know how long it takes to do x 2.

我们不知道要多长时间。

麻省理工公开课 - 计算机科学及编程导论课程节选

We don't know how to measure that either; do you agree?

我们不知道如何去测量它,是吧

耶鲁公开课 - 基础物理课程节选

My favorite moral dilemma is as I'm walking down the street and I see somebody I sort of know, do I avoid eye so we don't have a conversation or do I say, "Hey. How are you doing?"

我最喜欢的道德困境是,当我走在大街上时,我看到一个不是很熟的人，我要转移视线，免得要跟他交谈吗,还是我说”你好吗？“

耶鲁公开课 - 心理学导论课程节选

Before we talk about how to do it-- and we don't have perfect ways to do it yet but I'll describe some of the ways that are used, I want to talk just briefly on this slide about what the goals for gene therapy might be.

在讲具体怎么做之前--,现在还没有任何一种方法是完美的,但我还是要讲讲一些已经应用的方法,我借助这张幻灯片简要介绍一下,基因治疗的可能目标

耶鲁公开课 - 生物医学工程探索课程节选

So let me just return once again to the way in which sign systems are intelligible because lots of- there are going to be lots of moments in a course like this in which what we seem to be saying is that, "Oh, we can't know anything," or "We don't know what we know," or "How do we know what we know?"

现在让我们回到,怎样理解符号系统的话题上-,这个学期你们会有很多时候觉得,天哪，我们什么也认识不了“,或者，哎，我们其实并不了解我们以为理解的事“

耶鲁公开课 - 文学理论导论课程节选

How would we go about, I mean I don't want to do it because I'll probably get it wrong, but if I wanted to solve out for this X and the Y, since this is a QR class, let's just talk about it a second.

我们怎么解呢,我的意思是我现在不会去计算,因为我可能会算错,但是如果你真的很想解出X和Y的值,介于这是一节需要快速反应的课,那我们花些时间来探讨一下吧

耶鲁公开课 - 博弈论课程节选