"If we are to defeat this vicious insurgency and by doing so make Britain and the world a safer place, then we must persist with our operations in Afghanistan.

VOA: standard.2009.07.13

He is part of his own phantasmagoria and we adore him because nature has grown intelligible, and by doing so a part of our creative power.

他是自己幻影中的一部分,我们崇拜他因为自然而变得易懂，我们也理解自己的创造力。

耶鲁公开课 - 现代诗歌课程节选

And so you'll learn over time both by seeing and by doing that there are generally some good ways, some okay ways, and some bad ways of actually writing code.

久而久之，你们将通过看和实践来学习到,这里通常有很好的方法，还行的方法，很烂的方法来编写代码。

哈佛公开课 - 计算机科学课程节选

And so, what I want to do is begin by doing a little bit of introduction so you get to know what's going on.

还有，我开始要做,一点的介绍,你们就能知道它是这么回事了。

麻省理工公开课 - 固态化学导论课程节选

You might see them on the site and we just keep our operating expenses low so far and by doing that, we've been able to stay cash flow positive for basically the entire existence of the company.

在网站上可以看到,我们一直保持低成本运营，这样可以使得现金流的流入大于流出,自公司创办以来都是这样做的。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

So this diet, although it's processed by a company and sold for people doing animal studies, it more or less mimics what these animals might be eating under natural conditions.

尽管这些食物经过商业加工,并用于动物科学研究,但会尽可能的模拟,实验动物在自然环境下的饮食

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So whenever we're thinking about energy states, it's lways more stable to be more low in an energy well, so that's why it makes sense that it's favorable, in fact, to have an electron interacting with the nucleus that stabilizes and lowers the energy of that electron by doing so.

负的能量越多，能级越低,无论何时，能级总是越低越稳定,所以这就是为什么电子更,倾向于通过和原子核相互作用,来稳定并降低电子的能级。

麻省理工公开课 - 化学原理课程节选