A question from Taiwan: Chung Li wants to know why his face turns red when he drinks alcohol.

VOA: special.2009.05.13

And I don't know why, but since time immemorial that is the way computer scientists have drawn trees.

叶子是在最下面的，我不知道为什么,但从记事以来他们就是这么画树的,这也许就是为什么我们。

麻省理工公开课 - 计算机科学及编程导论课程节选

But for me, I like to look at something and just say, "I like this. I don't really know why though."

但对我来说，我喜欢看着某个东西，然后说，“我喜欢这个。但我也不知道为什么。”

关于现代美术 - SpeakingMax英语口语达人

They do not know why da Vinci painted it, or how it ended up in the collection of French ruler Francis the First.

VOA: special.2010.06.23

Usually when you know why it's not working, it's obvious what you have to do to make it work.

通常你明白了出错的原因后，很明显你必须让程序正常运行起来。

麻省理工公开课 - 计算机科学及编程导论课程节选

Mister Weindruch says researchers do not know why reducing calories increases the length of life.

VOA: special.2009.09.01

If you don't know why you're about to eat cake like that you will soon, but you know this.

如果你现在还不知道为什么将要吃到那样的蛋糕,很快就会知道的，你清楚这一点。

哈佛公开课 - 计算机科学课程节选

They do not know why all these things were found together in one place.

VOA: special.2010.08.03

But, you know why not do something a little special, little different, and they decided instead to use lithium.

但是你懂的，为什么不做的更特殊，更与众不同一些呢？

麻省理工公开课 - 化学原理课程节选

Scientists do not know why women are more at risk than men.

VOA: special.2009.04.14

I don't know why they make such a big deal out of the person landing on the moon.

我不理解人类登月,有什么大不了的。

哈佛公开课 - 幸福课课程节选

Researchers do not know why happiness increases as people get older.

VOA: special.2010.08.03

You know why focus on digital media were because in the wake of Columbine then we entered into a called period of moral panic, the moral panic is when you stop asking questions and start assuming you know the answers.

把关注点放在电子媒体的原因,是在科罗拉多可伦拜高中枪杀案之后,我们进入了一个叫做“道德恐慌“的时期，道德恐慌就是你不再质问,而是开始臆想你已经知道所有的答案。

麻省理工公开课 - 媒体、教育、市场课程节选

I don't know why I do it. I just do it."

VOA: special.2009.07.04

.. I just don't--people don't like-- ... people would rather hate-- I don't know why it's something-- it wouldn't be a good movie theme, would it?

我不。。。人们不喜欢-,人们宁愿厌恶-,我不明白为什么-,那不是好的电影主题吗？

耶鲁公开课 - 金融市场课程节选

Scientists do not know why women are more at risk.

VOA: special.2010.06.15

Does anybody know why so much time is spent on that? Yes?

有谁知道为什么要在这上面花这么多时间吗,你说

耶鲁公开课 - 基础物理课程节选

Mrs.Luce demanded to know why God had taken her daughter.

VOA: special.2010.08.08

Percent daily--no, I don't know why that's not on there actually.

日百分比,我也不知道它为什么没被标出来

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I do not know why I should fear death.

VOA: special.2010.07.10

Well, we don't know why they did what they did.

总之,我们不清楚他们为什么这样做

耶鲁公开课 - 古希腊历史简介课程节选

Doctors do not yet know why this is true.

VOA: special.2010.06.15

I don't know why.

不知道为什么。

麻省理工公开课 - 电影哲学课程节选

If you get a chance to see a red sunset over the Sangre de Cristo Mountains of New Mexico, you will know why that southwestern state is called The Land of Enchantment.

VOA: special.2009.08.16

And it makes you want to go get that insurance. I don't know why, but it does.

这让你想去买这家保险。我不知道为什么，但这就是这样。

广告泛滥 - SpeakingMax英语口语达人

But in a recent BBC poll, two-fifths of those questioned said they did not even know why British forces are in Afghanistan.

VOA: standard.2009.11.10

and you can't figure it out yet you've gone to doctors they don't know why either.

你没法弄明白，即便你去找医生，他们还是找不出原因。

That's why 课堂 - SpeakingMax英语口语达人

What, you think I regret saving you? I can see that you do.I just... I don't know why.

VOA: standard.other

They got caught. You know why they got caught?

被发现了，你知道为什么会被知道吗？

麻省理工公开课 - 固态化学导论课程节选

One wants to know why, why does he want to do that?

人们想知道为什么他想这么做？

耶鲁公开课 - 政治哲学导论课程节选