"I was one of these teenagers, and so I know how difficult it can be to break this habit when it's been with you for a long time,".

VOA: standard.2009.06.22

So I mean philosophy can talk about how do we know we got a table here between us. Right?

比如，哲学可以告诉我们是怎么感知到,我们之间有一个桌子，对不对？

普林斯顿公开课 - 人性课程节选

Let's look at a few examples of how we can use the "I don't know" pattern.

下面我们来看几个例子，看看该如何使用这个句型。

I don't know 课堂 - SpeakingMax英语口语达人

What I just spent many lectures discussing is the fact that we can not know how far away an electron is from the nucleus, so we can't actually know the radius of a certain atom.

我花了这么多课时所讨论的正是我们,不可能知道电子离原子核有多远这一事实，因此我们不可能知道某个原子的半径。

麻省理工公开课 - 化学原理课程节选

We don't know the time and we don't know how high it's rising so you can ask, "How am I supposed to deal with this problem?"

我们既不知道时间,又不知道最高点的高度,那你就会问了,这道题该怎么做呢

耶鲁公开课 - 基础物理课程节选

Now Descartes, you remember, in his Meditations begins by asking a series of questions about how we can know anything, and one of the skeptical questions he asks is, "Well, might I not be crazy?"

大家应该记得，在《沉思录》的开头，笛卡尔问了一系列,关于我们如何知道一切的问题，其中的一个问题是，我可能疯了？

耶鲁公开课 - 文学理论导论课程节选

I don't know how well you can make it out but there's a little broom guy there with glasses, playing air guitar with his broom, and I guess this is meant to capture the spirit of the contributors.

我不知道你们能理解到什么程度,但是在那儿有一个戴着眼镜的男孩，用他的扫帚在弹着吉他，我猜这个的寓意是指要抓住那些发起人的精神内涵。

耶鲁公开课 - 现代诗歌课程节选

I need to know how long, so that I can let my roommates know.

我得知道大概有多久，这样我就可以告诉我的室友们了。

How long实战 - SpeakingMax英语口语达人

So you can actually say, how do I know which methods are associated with the class? For that, we can call dir. And what it does, is it gives me back a listing of all the things, dir all the methods, that are associated with it.

我们开始建立类了，我们得到了这些方法,因此实际上你可以说，我怎么知道，哪些方法是关联与这些类的？,为了解决这个问题，我们可以调用，这个方法的作用。

麻省理工公开课 - 计算机科学及编程导论课程节选

This is very important,which is why I am doing it: "If we want to know how fast a human being can run, then it is no use to average out the speed of a "good sample" of the population; it is far better to collect Olympic gold medal winners and see how well they can do.

这话非常重要，是我作这个研究的原因：,“如果想知道人类最快能跑多快，那从好的样本中测出平均数是“,没用的;,而应该收集田径类奥运冠军的信息,看他们能跑多快。

哈佛公开课 - 幸福课课程节选

much more um, just... I don't know how I can describe... like hipster.

更注重，就……我不知道该怎么描述……就好像个时尚先锋。

纽约大学 - SpeakingMax英语口语达人

This is the first full paragraph: I don't know how to cure the sourcitis, except to tell you that I can discover a good many possible sources myself for Wise Blood, but I am often embarrassed to find that I read the sources after I had written the book.

这是第一段的全文：,“我不知道如何解决资料来源的问题，只能告诉你,我自己发现了很多《慧血》的材料来源，但我经常觉得很难堪,因为我在完成了那本书后才读的资料。

耶鲁公开课 - 1945年后的美国小说课程节选

There is no reference, in any of the tablets-- I don't know how much we can make of that because the tablets limit themselves to such limited kinds of things that maybe it doesn't prove anything, but in this case, I think it does.

在所有陶土碎片的文字中都没有注释,我不知道我们能够理解多少,况且陶土碎片可供记录的空间有限,也许它们不能证明任何东西,但在这里,我想至少可以证明一点

耶鲁公开课 - 古希腊历史简介课程节选

and you can say "I know, I know this is how it is, but this is how I want it to be or this Is how I am really feeling."

你可以说，“我知道，我知道这是怎么回事，但这就的确是我想做的事或者是我真实的想法。”

I can't help but 课堂 - SpeakingMax英语口语达人

I think you people know how we can say that with confidence.

我想你们肯定都知道我们为何如此确信

耶鲁公开课 - 基础物理课程节选

I don't know how well you can see it in this figure here, is the slope of a straight line connecting these two points, and as the points come closer and closer, the straight line would become tangent to the curve.

我不清楚你们对于这个图像的理解,这条连接两点的斜线,随着两点距离逐渐缩小,两点连线会变成曲线的切线

耶鲁公开课 - 基础物理课程节选