He described how the story of his family began long ago in Africa when slave traders captured one of his ancestors.

VOA: special.2010.06.28

You told me that you've written plays by yourself. How long did it take you to finish them?

你告诉我你自己写剧本。写完一个剧本要多久呢？

灵感从何处来 - SpeakingMax英语口语达人

One of the things you could imagine is just try it on and input, see how long it takes.

你们想出来的方法只是可能就是通过,输入来试试，看运行时间会有多长。

麻省理工公开课 - 计算机科学及编程导论课程节选

But no one has the answer to how much market share Bing will claim from Yahoo or Google in the long term.

VOA: special.2009.07.17

This is the starting speed, that's the rate at which it is gaining velocity, and that's how long it's been gaining it.

这是起始时的速度,这是速度的增长速率,这是加速的时间

耶鲁公开课 - 基础物理课程节选

There could be two more. No one knew how long Kentucky and Missouri would remain in the Union.

VOA: special.2009.08.20

Boards of directors have long agonized over how much to borrow and different companies seem to have different cultures.

董事会一直被该借多少钱的问题所困扰着,不同的国家有着不同的文化

耶鲁公开课 - 金融市场课程节选

Those issues also include where to draw the more than two-thousand-kilometer-long border and how to share oil money.

VOA: special.2011.06.04

We seem to also have a different account of how long the flood lasted; there are more subtle contradictions throughout as well.

关于洪水持续了多久，我们有不同版本;,他们之中有很微妙的不同。

耶鲁公开课 - 旧约导论课程节选

Charles Darwin developed the theory of how living things develop from simpler organisms over long periods of time.

VOA: special.2009.02.25

You know, it's all the destroyed It doesn't matter how long the Ambersons flourish, eventually they like everybody else, it's gonna be destroyed.

你知道，一切皆会被毁坏,安巴逊一家兴盛了多长时间已经不重要了，因为最终就像其他人那样，早晚都会毁灭。

麻省理工公开课 - 电影哲学课程节选

Muse Opiang studied how echidnas eat, by digging in the earth with their long noses to find worms.

VOA: special.2009.07.07

But notice how long it took us to get there, how many centuries it took.

但是要注意到这要多长时间，它花了多少个世纪。

耶鲁公开课 - 新约课程节选

The last time the United States Education Department asked young people how long they took to finish college was in two thousand one.

VOA: special.2009.07.23

- So what we're seeing is this is notes from 1902 -- he actually didn't publish any of this work or these ideas that led to Lewis structures until 1916, but his early class notes were used as evidence about how long ago he actually came up with the idea of it.

我们看到的这是，1902，年的讲义-,实际上他直到1916年才发表这些工作或者想法,后来发展成为了路易斯结构，但他早年上课的讲义却成为了他在多久之前,就产生了这个想法的证据。

麻省理工公开课 - 化学原理课程节选

The unusually long period of cold weather has shown how even warm climates can sometimes freeze over.

VOA: special.2010.01.12

stay there because who knows, there are 20 million other things I might have said, but instead let me give you the opportunity to ask questions that you would like to raise, particularly if you want to ask about how they fought, as long as we have a phalanx here we might as well use it if we need too.

你们先别走,因为,谁知道还有什么呢,我还有一肚子的东西想给你们讲,但最好还是留给你们,一些提问的机会,尤其是关于战斗的问题,讲台上正好有一列方阵可以用来讲解

耶鲁公开课 - 古希腊历史简介课程节选

It was a cancer. President Cleveland asked how long he could wait to have the cancer removed.

VOA: special.2010.06.17

it doesn't matter how rich you are. So, just being able to live a long healthy life.

再富有都没用。所以健康长寿最重要。

成为教练的理由 - SpeakingMax英语口语达人

The goal was to test whether Internet stations could be set up, how much they would cost, and how long they could operate.

VOA: special.2009.02.16

How it ends up in the long run for the Dutch is that the Dutch cease to be a great power.

荷兰长远之后的下场,便是荷兰国力日衰,风光不再

耶鲁公开课 - 欧洲文明课程节选

"One of the things the World Bank measured was how long it takes to start a business.

VOA: special.2010.05.10

I think that no matter how we try to fill in the blank, it's a very long blank.

我认为不论我们多么努力地填补空白，那是一个很长的空白。

耶鲁公开课 - 死亡课程节选

And we do. Cracking jokes,grins, Long past the crack of dawn Like"How long will you be up?"

VOA: special.2009.04.17

So these are symbols telling us how long a particular frequency is to endure.

因此,这些符号是告诉我们,某个特定的声音频率要持续多长时间

耶鲁公开课 - 聆听音乐课程节选

The Serbian president said there will be an investigation into how Mr.Mladic avoided arrest for so long.

VOA: special.2011.05.28

That's where you're just asked over a period of time, how often you eat this list of foods and you're given a very long list of foods.

正如同你们刚才问的,你多久吃一次这些食物,你有一个很长的食物列表

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

This month's announcement did not say how long he might be away or give a reason.

VOA: special.2011.01.28

The topic for this week is cell communication: how mechanisms that cells within a complex organism use to communicate with each other at short distances or long distances.

本周的主题是细胞通讯,即在一个复杂机体中的细胞,采用何种交流机制,在或长或短的距离中相互联系

耶鲁公开课 - 生物医学工程探索课程节选

So how long you leave the window open.

你会让特定的窗口打开多长时间。

哈佛公开课 - 计算机科学课程节选