In a White House bill-signing ceremony Wednesday, the president reaffirmed a goal he set out early this year: to double exports of U.S.goods and services in the next five years.

VOA: standard.2010.08.11

And by that what we mean is that they're absolutely identical, and it turns out that this here is not a double bond, it's not a single bond either, it's actually something in between.

这意味着它们是绝对完全相同的，实际情况应该是这不是一个双键，这也不是一个单键，而是介于两者之间的状态。

麻省理工公开课 - 化学原理课程节选

N 2 So any chemist should be able to just look at n 2 and know that it's a triple bond, but that's not something that we've learned how did to do yet, so let's go ahead and start a new topic that's going to allow us to have some sort of sense of what the valence electron configuration, which includes whether something's a single or double or a triple bond can be figured out for any given molecule.

任何一个化学家都应该能够仅仅通过看到2,就知道它有一个三键,但是我们还没学习如何做到这点，因此下面我们就开始进入一个新的主题,它将使我们能够有一定的认识,对于价电子的排布情况，包括可以对任何一个给定分子中的键是单键双键,还是三键作出判断。

麻省理工公开课 - 化学原理课程节选

The Libyan leader has also warned that the ICC is "selective" in meting out justice, and that it is "employing a policy of double standards in targeting African and third-world states."

VOA: standard.2009.03.26

skittles So when you compile a program called A dot out, or skittles or wherever, and you double-click that program, or our in our command line environment, run it with dot slash skittles, that program is loaded Microsoft Word into memory just like Microsoft Word or whatever would be on your own computer.

当你编译一个程序a，out，或者,或其他的，你双击那个程序，或着在我们的命令环境中，采用，/skittles来运行它，那个程序被加载到,内存中，就像,或者你电脑上的其他程序。

哈佛公开课 - 计算机科学课程节选

It turns out to activate RNA interference, you deliver double stranded RNA.

要激活RNA干扰效应的话,可以将双链RNA转进细胞

耶鲁公开课 - 生物医学工程探索课程节选