Let us say I want to sell my car but I do not know exactly how much it is worth.

VOA: special.2009.04.12

I had choice for actions with people I know on the street, with people I met in rides to different places.

我可以在街上与我认识的人交谈，和我在前往不同地方的路上遇到的人交谈。

普林斯顿公开课 - 人性课程节选

I chose English Literature because when I started off a university, I didn't know what it was I wanted to do.

我选英语文学是因为当我刚上大学的时候，我不知道自己到底想做什么。

为何选那门专业？ - SpeakingMax英语口语达人

But it's a lot easier than picking up trash, you know,and doing that, so,you know,I gave it a try."

VOA: special.2010.06.03

It's very simple. It's this: if I know what I'm doing, it is almost inevitably the case that you would know also.

实际上十分简单：,如果我知道我创作的是什么，那么你很可能也知道我创作的内涵。

普林斯顿公开课 - 人性课程节选

As long as I paid my medical school fees every year, my family would never know I wasn't attending any classes.

VOA: special.2009.07.18

Something I can measure and I can tabulate, and when I turn my dT knob here I know what's going to happen to the enthalpy.

----热容，我们可以用实验，测出热容并成表,当我知道这里的变量。

麻省理工公开课 - 热力学与动力学课程节选

I know this is so, because when I put my small finger in front of the moon, my fingernail covers it."

VOA: special.2009.03.28

Thank you. I mean, I know I sort of said it to you, but you're right. It's logarithmic, right?

但你们是正确的，是对数级的,它有这样的效率是因为他每次能把问题减半？

麻省理工公开课 - 计算机科学及编程导论课程节选

John Glenn, the former astronaut who was then a senator from Ohio, put it this way: "I know the Great Lakes.

VOA: special.2009.01.05

Now why--and here is the question why do we get this nervousness about the relationship between what I know and how I know it arising at this moment?

问题是,为什么那时候我们对,我知道什么和我如何知道的关系如此神经紧张？

耶鲁公开课 - 文学理论导论课程节选

I know only that the body was buried near the cabin, next to the burial place of his wife.

VOA: special.2009.10.31

It's a common mistake to make if you forget that I've actually declared that variable up top, but wait a minute, I know any time that I use a variable, I have to declare it.

这是一个通常犯的错误，如果你忘了,之前在前面已经声明了这个变量，等等，我知道在任何时候,我使用一个变量，我必须声明它。

哈佛公开课 - 计算机科学课程节选

"I know it's an election year. And after last week, it's clear that campaign fever has come even earlier than usual.

VOA: special.2010.01.30

That is a wild assumption, but it's fun to make, because I know pretty well-- I know very well--that people aren't doing this.

这是个大胆的假设，不过有趣的是，因为我很清楚-,我很清楚，人们并不会这么做。

耶鲁公开课 - 金融市场课程节选

"I know I personally got my job that way. And the people that worked there before me got their jobs that way.

VOA: special.2010.06.11

So I start by trying to strip off the parts of my conscious life that I know I won't have when I'm dead.

所以我决定开始剥离那些,我知道死后不会有的,有意识的生活的各个部分。

耶鲁公开课 - 死亡课程节选

LOU COSTELLO: "What I want to find out." BUD ABBOTT: "I say Who's on first, What's on second, I Don't Know's on third."

VOA: special.2009.03.09

As far as I know -- I know of no exception, although someone may well be able to produce one no original poem in English had ever been published with line numbers in the margin in its very first printing.

就我所知，无一例外，尽管有些人能很好的制作出摹本,但英语原版诗歌从不在首次印刷的时候,把行数印在页边空白处。

耶鲁公开课 - 弥尔顿课程节选

I know the man went away. He got somethin' to do travelin' so he wasn't home much.

VOA: special.2010.05.15

How do I know when I've got this one or this one?

我怎么知道我找到的是什么细胞呢

耶鲁公开课 - 生物医学工程探索课程节选

Kathy in Canada wrote: My daughter likes complaining about everything in the morning, and I know that this is from lack of sleep.

VOA: special.2010.10.14

I don't know what your major is; I don't know what you are going to do later so I picked the topics that all of us in physics find fascinating.

我不知道你们的专业是什么,我也不知道你们今后从事什么工作,因此,我会选择一些,物理学界公认的有趣的内容

耶鲁公开课 - 基础物理课程节选

So I know.I saw the whole thing from the beginning, from the very day when the little boy here met with the accident."

VOA: special.2010.05.15

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

How could I answer the child? I do not know what it is any more than he.

VOA: special.2009.04.12

So, give me two more minutes, I'm going to end, and a few of you, faces, I've heard this before, people that I know; but, I guess one reason why I'm in history--well, because I read a book a long time ago.

所以,再给我两分钟,我就要结束了,你们有些人,面孔,这我见过,有的人我认识,但是,我觉得我之所以搞历史,因为我很久以前读过一本书

耶鲁公开课 - 1871年后的法国课程节选

"I'm sorry to say." said Cleveland, "but the truth is, I know nothing about the tariff."

VOA: special.2010.05.20

And you've asked several people on the street . "I just can't get there! I don't know where I'm going!" and

你在街边向几个行人问路。“我没法找到目的地了，我不知道该怎么走！”

How long课堂 - SpeakingMax英语口语达人

So I just want, you know, I feel like that experience would be enriched if I, you know, learned the language.

我始终觉得，如果我会韩语的话，我在韩国的经历会更加丰富。

学习外语的原因 - SpeakingMax英语口语达人