So in oxygen again, this is just showing the valence electrons, so we end up having six valence electrons from each oxygen atom.

所以在氧里面，这里只展示价电子，我们最后每个氧得到6个价电子。

麻省理工公开课 - 化学原理课程节选

And the idea behind recursion I'm going to describe with a simple example. And then I'm going to show you how we can actually use it.

但是为了解释递归的意义,我想举个简单的例子,我将会给你们展示我们该如何使用它。

麻省理工公开课 - 计算机科学及编程导论课程节选

What I looked at--and I have this on the website, I have a chart showing corporate profits taxes paid, as a fraction of corporate profits for the United States since 1929.

就我所观察...关于这点在网站上有说明,我有个图表展示了自从1929年以来,实缴企业所得税占公司利润的百分率

耶鲁公开课 - 金融市场课程节选