But seeing the seriousness of his question,she said, "The mark has so often been called a charm that I was simple enough to imagine it might be so."

VOA: special.2009.09.26

It's the most simple-- or often called a bill-- a discount bond does not pay interest; it's sold at a discount.

它是最简单的,经常被称为国库券,它是一种贴现债券,且不付息,并以折扣价发行

耶鲁公开课 - 金融市场课程节选

Or a lot of the times when a website is compromised and you're able to steal someone's usernames and passwords, very often are the result of simple little things like this.

很多时候，当要访问的网站被人破坏了,你就有机会窃取别人的账号,和密码，正是因为这样或那样的小疏忽存在,才会导致这种事情频频发生。

哈佛公开课 - 计算机科学课程节选

In his photographs of gas stations, diners and cemeteries he found a beauty so simple but commonplace it was often overlooked, so unspeakably true but poignant it was rarely acknowledged."

VOA: special.2009.03.23

It's often these very simple but powerful ideas that really take off.

这些简单的观点常常极为有力,能够产生深远的影响。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

So that means that we don't have to worry about things like wave functions when we're talking about Lewis structures, but because they're so simple to use and because they so often predict the electron configuration of molecules accurately, we end up using them all the time in chemistry, so it's very valuable to know how to draw them correctly and to know how to work with them.

因此这也就意味着我们在讨论路易斯结构的时候,不需要担心波函数之类的东西，但是由于路易斯结构不仅简单易用,而且用它来预测分子的电子排布,经常可以得到非常精确的结果，结果我们在化学中一直都在用它，因此知道如何正确地画出并运用,路易斯结构是非常有价值的。

麻省理工公开课 - 化学原理课程节选