This is a common problem for millions of children around the world and not just at school, but also at home.

VOA: special.2009.12.21

This is a little paradise, a paradise on the verge of being lost as the shades lose their leaves.

这是一个微小的天堂，一个随着叶子的凋落,即将失去的天堂。

耶鲁公开课 - 弥尔顿课程节选

dT/dp is mu JT. So for a real gas like air, this is a positive number. It's not zero.

所以对于像空气这样的真实气体，这是一个正数，不等于零。

麻省理工公开课 - 热力学与动力学课程节选

This is a four-team grouping that contains three or four strong teams - all with hopes of winning it all.

VOA: special.2010.06.09

And that's follow-- so this is, let me say this is a keyword-- that is followed immediately by a name.

接下来就是关键词，紧跟着名字的是一个等式-,在这个例子中。

麻省理工公开课 - 计算机科学及编程导论课程节选

"They say this is a state-led effort," he says, but he thinks the goal is national control of education.

VOA: special.2011.06.16

Einstein is only a theoretician and de Broglie is a theoretician, so one theoretician propping up another theoretician, this is a mutual admiration society.

爱因斯坦是个理论家,布罗意也是，因此一个理论家可以去认可另一位，这是个彼此仰慕的社会。

麻省理工公开课 - 固态化学导论课程节选

The gel contains tenofovir. This is a common anti-retroviral drug used to treat people with HIV, the virus that causes AIDS.

VOA: special.2010.07.21

Because this is a theological conjecture, I think we're shocked by what is almost the heretical daring of what this brother has just said.

因为这是一个神学猜想,我想我们是被刚才大哥说的异常大胆的话震惊了。

耶鲁公开课 - 弥尔顿课程节选

So I think this is a chance for them to know more about China, what China is really like.

VOA: special.2010.02.04

But this is a -- this raises a problem, that we'll see actually in just a moment having this duplication.

但这就引起了一个问题，我们刚才看到了,我们有一个重复的值。

哈佛公开课 - 计算机科学课程节选

This is a potentially catastrophic disaster and the images of destruction and flooding coming out of Japan are simply heartbreaking.

VOA: special.2011.03.12

Of course this is a tradition in MIT of not going to the lectures in a large freshmen courses.

这在麻省理工是一个传统,学生们都不去上,新生的大型讲座课。

麻省理工公开课 - 媒体、教育、市场课程节选

This is a nonprofit group that helps develop land and farm-based businesses in and around the city of Burlington.

VOA: special.2010.10.25

Now incidentally, in a for-profit corporation-- this is how to understand this, this is a concept that is enshrined in law.

顺便提一下,在一家盈利性公司中,我们需要这样理解,这是个在法律中明文昭示的概念

耶鲁公开课 - 金融市场课程节选

This is a cowboy. They were actually drawing influence from Italian puppetry which is this very realistic puppetry.

VOA: special.2009.09.23

This is a distinction which is not meant sort of counter-intuitively to suggest that somehow or another, as opposed to what we usually think, writing precedes speech--not at all.

这个区别没有在某种程度上故意地，与我们的直觉相反,暗示，无论如何，与我们通常想的相反,我们通常认为书写是在讲话之前的，完全不是这样。

耶鲁公开课 - 文学理论导论课程节选

If you want to have power in this society you must master the three literacies this is a class about power,your power."

VOA: special.2009.04.27

And people give presentations and this is a photo of someone giving a presentation in a positive psychology summit.

被邀请进行讲座，这是一位学生,在积极心理学峰会上作讲座的照片。

哈佛公开课 - 幸福课课程节选

This is a big change from earlier models where NASA led and controlled the development of space vehicles.

VOA: special.2010.04.28

This is a picture of London Bridge, it's an interesting bridge which is important in the history of London.

这是伦敦桥的照片,它是一座有趣的桥,这座桥在伦敦历史上占有重要的地位

耶鲁公开课 - 生物医学工程探索课程节选

He said this is a welcome message in two thousand ten - the International Year of Biodiversity.

VOA: special.2010.04.06

But at the same time, this is slightly earlier, this is a painting--thanks, Dan--this is a painting of bruegel the Elder.

这是同时期稍早时候的一幅画,出自老布勒哲尔之手

耶鲁公开课 - 欧洲文明课程节选

This is a result of spiritual influences he learned from his parents who were religious workers.

VOA: special.2009.07.10

This is a little bit of a tricky experiment, so we decided we'll just smoosh it all in, and we'll actually be able to account for it, because we'll take into account the area of all of those atoms.

因为我们要，考虑所有原子的面积，我觉得这个，黑板是不能自动上去的，好了，我们知道。

麻省理工公开课 - 化学原理课程节选

They say this is a surprise because there have always been more plant-eaters in the world.

VOA: special.2010.04.07

This is a story that is predominantly in Genesis 2 and trickles into Genesis 3 and I'm going to look at it mostly in isolation from the first account.I'm going to be looking at it in light of an important parallel.

这个故事在《创世纪》2，3章中占据很重要的地位,我采用脱离对第一个故事的描述方法,将这两个故事，放在同等重要的位置上来解读。

耶鲁公开课 - 旧约导论课程节选

"So our view,with all respect, is that this is a car that can't be recalled and fixed, and that we ought to start over."

VOA: special.2010.02.27

but I'd like to argue today that this is not just a philosophical question,this is a scientific question.

但我今天想说的是，这不仅仅是一个,哲学问题，它还是一个科学问题。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

One consideration in all of this is that this is a very young field and nobody knows how to do it yet.

这里的一个问题便是,这还是一个新兴的领域,没有人知道该怎样进行研究

耶鲁公开课 - 心理学导论课程节选