Although a major oil producer, Iran must import most of its gasoline because of a lack of refining capacity, creating what U.S.lawmakers have long seen as a crucial point of leverage with Tehran over its nuclear program.

VOA: standard.2009.10.28

And now we're almost done, except what we H really want is delta H and not delta U, right.

我们差不多已经完成了,除了我们实际上想要的是Δ

麻省理工公开课 - 热力学与动力学课程节选

What is the exchange rate between the U.S. dollar and the Swedish crown?

美元和瑞典克朗之间的汇率是多少？

来自瑞典 - SpeakingMax英语口语达人

Why did you choose U.S.C.? What do you do on the weekends?'

VOA: special.2010.05.27

The food guide pyramid was the government's effort, put through by the U.S. Department of Agriculture about what people should eat optimally.

食物金字塔是政府努力的结果,它是由美国农业部提出的,关于人们最佳饮食结构的建议

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

withdrawal from Afghanistan would likely lead to the Taliban regaining power, and questioned what an expanded U.S.military presence would accomplish.

VOA: standard.2009.10.15

So, I just want to write a few examples down with a few values for delta u or delta H or delta S, and see whether we can get any clues from what we see.

我先写一些例子,例子包含一些内能，自由焓和熵的变化数值，然后看从中,我们能不能得到一些启示。

麻省理工公开课 - 热力学与动力学课程节选

"And so, what we're trying to let them know is that we want to have a successful U.S.auto industry.

VOA: standard.2009.03.30

I don't know what percent; our oil reserves in the U.S. are pretty small, so we're kind of lying somewhere inside-- maybe on this pink line.

我不知道具体占百分之几;,美国的石油储备量是微不足道的，所以我们可能是位于这附近-,也许在这条粉线上面。

耶鲁公开课 - 金融市场课程节选

General Xu said the U.S.-China military relationship might have to endure what he called some more "shocks of adversity."

VOA: standard.2009.10.27

Someone else is going to come in and produce cola in this industry and that's exactly what happened in the U.S. At the turn of the last century.

其他公司会参与进来也生产可乐,这就是上个世纪末在美国发生的事情

耶鲁公开课 - 博弈论课程节选

The U.S.official said several UNASUR leaders detailed what they see as a long history of U.S.intervention in their countries.

VOA: standard.2009.04.18

to causes of death in the world, to illustrate that what happens in the world around us in the U. S. isn't necessarily the same asin the U.S. isn't necessarily the same as what happens in other places around the world.

而是关于世界上所有人的死因,它说明同美国的情况相比,世界其他地区的情况,有所不同

耶鲁公开课 - 生物医学工程探索课程节选

NATO officials say one helicopter crashed in western Afghanistan after U.S.and Afghan forces raided what was described as a militant hideout.

VOA: standard.2009.10.26

What do you think is the main difference between Germany and the U.S.?

你觉得德国和美国主要的区别是什么？

一见钟情的学校 - SpeakingMax英语口语达人

Asked what the new treaty means for U.S-Russia cooperation on the Iranian nuclear issue, Secretary Clinton referred to recent in depth consultations.

VOA: standard.2010.03.26

What this is is the price of a portfolio of shares in U.S. companies.

这是美国公司的股票投资组合的价格

耶鲁公开课 - 金融市场课程节选

What some call the V-word - Vietnam is increasingly heard in the growing debate over U.S.involvement in Afghanistan.

VOA: standard.2009.09.09

Incidentally the U.S. did create what sounded like central banks.

顺便提一句,美国确实有过中央银行。

耶鲁公开课 - 金融市场课程节选

"You got into a negotiation, and that was what the Brazilians wanted, and the U.S.negotiators were willing to go along with that."

VOA: standard.2010.04.28

Now, what happened was the U.S. Government-- or the Massachusetts Government--had created high inflation during the war and nobody wanted to lend money to it so they create here a price index.

当时的美国政府,或者说麻省州政府在战争期间引发了高通胀,以至于没人愿意借钱给他们,于是他们制定了一个价格指数

耶鲁公开课 - 金融市场课程节选

General Xu also said the U.S.-China military relationship is important to building what he called "strategic trust,"

VOA: standard.2009.10.27

So delta u is just equal to the work but we also know what happens T2 because the temperature is changing from T1 to T2.

所以Δu等于输出的功,但我们也知道它会发生,同时我们知道温度从T1变到。

麻省理工公开课 - 热力学与动力学课程节选

Mr.Netanyahu expressed appreciation for what he said are U.S.efforts to stop Iran from acquiring nuclear military capability.

VOA: standard.2009.10.30

u=q+w All right, what is delta u? delta u is q plus w.

好，Δu是多少？Δ

麻省理工公开课 - 热力学与动力学课程节选

The U.S.military says four of its service members have died in what it calls a "complex attack" in the eastern part of Afghanistan.

VOA: standard.2009.09.09

Just like u, we'd like to be able to express it in a way that allows us to calculate what happens only from equation of state data.

就像内能u一样，我们希望能够利用状态方程的数据,计算出其表达式,这些表达式能方便我们说出即将发生的过程。

麻省理工公开课 - 热力学与动力学课程节选

The message contained detailed instructions,particularly on what type of intelligence should be collected from each U.S.warship.

VOA: standard.2010.01.07

I would be looking at this--at the debt areas Student: You mentioned about the U.S. dollar falling in value recently. What kind of foreign currency vehicles or trading would you recommend to kind of hedge a bet against a dollar assuming that it continues to fall?

我会考虑这方面的投资--债务市场方面的机会,学生：你刚才提到美元,最近贬值的问题，那么哪些品种的外汇金融工具,或者外汇交易在你看来可以用来,对冲美元贬值的风险,如果我们假设美元还会将继续贬值？

耶鲁公开课 - 金融市场课程节选

And delta u is equal to what we'll call w1 prime.

u等于w1一撇。

麻省理工公开课 - 热力学与动力学课程节选