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

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

So what does that tell us about a state function like u?

所以这告诉我们的是,这过程中像u这样的态函数式怎么变化的？

麻省理工公开课 - 热力学与动力学课程节选

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

And it's more dramatic if the system is a gas p T2 V2 p, T2, V2, And let's look at what happens to U these functions of state, to H to u under this transformation.

如果是气体这个系统,就更具有趣了,让我们看看H和，在这个变化中态函数会发生什么变化。

麻省理工公开课 - 热力学与动力学课程节选

"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

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

"And again similar to what we saw in Baghdad in 2003 when the United Nations was targeted the U.N.has become a target for terrorism.

VOA: standard.2009.06.19

that rather than helping build a stable Afghanistan capable of governing itself, what they describe as an escalation of the U.S.presence may actually harm U.S.security.

VOA: standard.2009.03.17

They say they do not think Iran will engage seriously in the absence of what would be a fourth round of sanctions by the U.N.Security Council.

VOA: standard.2010.05.14

The U.N.is helping to coordinate what is becoming a massive international relief effort.

VOA: standard.2010.01.14

President Barack Obama described the incident as a "systemic failure" of America's security apparatus, and U.S.officials have pledged to do what it takes to prevent a recurrence.

VOA: standard.2009.12.30

Pyongyang says its nuclear arsenal is justified, given what it calls a U.S.

VOA: standard.2010.04.11

But things are starting to change. New legislation that's been introduced in the U.S.Congress would require all states to implement what's called a "Graduated Driver Licensing" system.

VOA: standard.2010.06.24

"Well,what we found is a lot of ambivalence. A bare majority of Americans, about 52 percent, think that the U.S.military effort there is a good idea and should be there.

VOA: standard.2009.11.16

After meeting with Arab foreign ministers in Morocco, Clinton sought to deflect that criticism, saying none of her counterparts characterized what she said in Jerusalem as representing a change in U.S.position.

VOA: standard.2009.11.02

Despite what he calls overblown fears of a double-dip recession, Cardillo predicts the U.S.economy will grow between two and a half to three percent for the second half of the year.

VOA: standard.2010.07.20

The visit to Damascus by U.S.envoy Mitchell is another step in what has been a cautious effort by the Obama administration to draw Syria into diplomatic engagement after years of strained relations.

VOA: standard.2009.06.09

One of the American observers, former U.S.Senator Gary Hart, praises the millions of voters who defied what he calls " a small group of cowardly people in the shadows who hate democracy."

VOA: standard.2009.08.22

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

The two presidents met for the first time on the sidelines of the G-20 economic conference in London in early April and set in motion what Clinton says is an effort to raise the frequently contentious U.S.-Russian relationship to a higher level.

VOA: standard.2009.05.07

His comments reflected what other officials have said that ending the F-22 program is just one part of the effort to shift the focus of U.S.defenses away from what they see as the relatively remote possibility of a war with a major power and toward the types of smaller-scale conflicts of recent years.

VOA: standard.2009.07.21