Mostly they gather dust. But a project based in Washington is putting unwanted bikes from the United States to good use in developing countries.

VOA: special.2009.11.16

But shielding is a good way to think about it, and actually, that's what we'll use in this class to sort of visualize what's happening when we have many electrons in an atom and they're shielding each other.

实际上，它也是我们将在课堂上用于,分类形象化的当我们有,很多电子在原子中,它们互相屏蔽时会发生些什么,屏蔽是被使用的名词。

麻省理工公开课 - 化学原理课程节选

I don't use in good wise in that. But "healthy and wealthy".

我可能说的不是很好，总之是健康又富裕。

普林斯顿公开课 - 人性课程节选

The problem with finance is that it's a beautiful -financial institutions are beautiful structures but they only are as good as the people who use them.

金融业的问题是...,金融机构的结构十分巧妙,但它们的优劣取决于从业人员

耶鲁公开课 - 金融市场课程节选