Somali officials say some fishermen armed themselves and began demanding money from fishing ships near the Somali coast about ten to fifteen years ago.

VOA: special.2009.05.27

Well, it turns out some of you might recall this silly game from years ago.

这也许可以让我们中的一些人,想起来很多年前的一个很傻的游戏。

哈佛公开课 - 计算机科学课程节选

So, let's see how some of this works, and hopefully your counterparts from 100 years ago would also be able to think about how this works, even if they don't have the quantum mechanics behind the individual electron configurations for atoms.

那么，下面让我们来看一下它是怎么用的，希望一百年前想你们一样的同学,也能够弄懂它为什么能用，尽管他们没有量子力学,不知道原子的电子排布。

麻省理工公开课 - 化学原理课程节选