You didn't know who wrote it, where, when, how, why, and someone says to you, "I want you to draw some conclusions about that piece of writing.

你不知道是谁，在哪里，什么时间，怎么样，为什么要写,然后你被要求对篇文章，做一个总结。

耶鲁公开课 - 旧约导论课程节选

I don't know if you know this, but for a long time when movies took place in New York,

我不清楚你是否知道，很长一段时间，电影里发生在纽约的场景，

电影里的中央车站 - SpeakingMax英语口语达人

I don't know what the dates say, 1916, excuse me, and you can see what he's done.

我不知道具体时间了，1916年，不好意思，你能看到他在做什么了。

麻省理工公开课 - 固态化学导论课程节选

Because you don't know how much more time you've got-- You can make a guess based on statistics, but as we saw, there's wild unpredictability.

因为你不知道你剩下多少时间-,你可以根据数据进行猜测，但是我们都知道，不可预见性太难把握。

耶鲁公开课 - 死亡课程节选

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

But I don't really know about how long it would take people to hack, like, the general firewall

但我不知道人们具体要用多长时间才能穿过防火墙，

理想是当密码专家 - SpeakingMax英语口语达人

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

I don't know where people find time to spend with their boyfriends here. So, yeah. I'm fine.

我不知道这里的人怎么找到时间跟男朋友相处。所以，是的，我一个人挺好。

有趣的留学生活 - SpeakingMax英语口语达人

I held off for a very long time, but I just got mine a month ago. And now I don't know how I live without it.

我拖了好长时间，一个月前才买的。而且现在我不知道离开它该如何生活。

没有智能手机活不了 - SpeakingMax英语口语达人

I'm going to live here for, who knows how long. Quite a long time.

我打算定居在这儿，不知道多久。会是相当长一段时间。

追忆艾米 - SpeakingMax英语口语达人

That's the kind of question we have to face when we think about the fact that we don't know how much time we've got.

那是我们必须要面对的问题,当我们考虑到,我们不知道自己还有多少时间这个事实时。

耶鲁公开课 - 死亡课程节选

I don't know where that is, that disappeared on the blackboard, then putting the time equal to 1 second into this formula.

我不知道我写在哪儿了,已经不在黑板上了,然后把时间等于1秒代入方程

耶鲁公开课 - 基础物理课程节选

Not only is it inevitable that you're going to die; not only do some people live longer than others, you don't know how much more time you've got.

你会死去这不仅是不可避免;,不仅有些人活得比另一些人久，你也不知道自己还剩下多少时间。

耶鲁公开课 - 死亡课程节选

Because of course,if I haven't had it no wonder I don't remember it but if I have had it,I would have been given that temporary sort of localized amnesia So of course I wouldn't know whether or not I've had it So you ask the nurse ?" "Have I had the operation yet or not?"

因为如果没有手术,难怪我不记得了,但如果手术了，我会被给予那种,短时间的局部失忆药物,所以当然我不知道有没有做了,你就问护士,“我做手术了吗“

耶鲁公开课 - 死亡课程节选

And we turned to a discussion of the unpredictability of death, -- the fact that because we don't know-- we can't predict--how much more time we've got, we may, as it were, pace ourselves incorrectly.

我们转而讨论死亡的不可预测性，因为我们不知道-,我们不能预测--我们还有多少时间，我们可能，可以说是，为自己定错了前进的速度。

耶鲁公开课 - 死亡课程节选