Speaking at a panel discussion at the Urban Institute in Washington, Zandi cited the nation's double digit unemployment as reason for caution.

VOA: standard.2010.01.29

He serves as something like a complicated double for the young, unpublished, and as of yet unproductive poet himself.

他就像一个复杂的替身，是那些年轻的，还没出版诗歌或是不多产的诗人自己的替身。

耶鲁公开课 - 弥尔顿课程节选

And I pretty much worked hard, double harder and tried to get as much as I can in.

我确实很努力，我付出了双倍的努力并且尝试着得到更多。

对你而言，钱是？ - SpeakingMax英语口语达人

As part of the new strategy, Napolitano says the United States will double the number of border security teams, and will quadruple the number of border liaison officers who work with Mexican officials.

VOA: standard.2009.03.24

So if I want to use a string as we'll call it which is a word or phrase generally, they always go between double quotes, David hence the quotes around David, and they are double quotes not single quotes intentionally.

当我们要表示单词啊，词组啊，句子啊等等这样的东西时,就会用到字符串，它们位于双引号之间，也就是这里双引号之间的，是双引号，不是单引号哦。

哈佛公开课 - 计算机科学课程节选

"In a short time,we realized that we were going to have 27 wells within a short walk from the house, And as of today,we have 63, with indications that will double in the next two years."

VOA: standard.2010.01.02

Milton recognizes that way of thinking as a double standard, ; and he isn't satisfied with this vulgar double standard; so he comes up with a vulgar double standard of his own.

弥尔顿认为这种思维方式有双重标准，他并不满足于低俗的双重标准;,因此他提出了一个他自己的庸俗双重标准。

耶鲁公开课 - 弥尔顿课程节选

The 27-member bloc agreed to double loans available to eastern European countries to $68 billion and to contribute about $100 billion to the IMF as part of an overall funding increase so the institution can help countries worldwide battle the economic downturn.

VOA: standard.2009.03.20

This intuitively should make a lot of sense, because we know we're trying to minimize electron repulsions to keep things in as low an energy state as possible, so it makes sense that we would put one electron in each orbital first before we double up in any orbital.

这个直观上讲得通，因为我们知道尝试去最小化电子排斥力,从而尽可能的保持处于一个较低的能态,所以它讲得通,在我们在同一个轨道放入两个电子之前,我们首先把电子放入每一个轨道。

麻省理工公开课 - 化学原理课程节选

"He is at 50 or below in most surveys, and that is mainly because of the economy, which continues to be stubbornly weak, the unemployment rate is very high and still in double-digits, and as a consequence Obama does not have much margin for error,".

VOA: standard.2010.01.06

Now the nice thing about this is that the degradation mechanisms seem to persist for some period of time, beyond the time at which you deliver the double stranded RNA; whereas, obviously, this mechanism here is only going to exist for as long as the anti-sense sequence is present.

而好消息是降解过程会持续一段时间,比你转入双链RNA的时间要长,但是,这种机制只会在,有反义链的时候发挥作用

耶鲁公开课 - 生物医学工程探索课程节选

But once you have a double bond here, we have our pi bond, as well as our sigma bond.

但一旦你有了双键，我们有π键，也有sigma键。

麻省理工公开课 - 化学原理课程节选