It's hard not to get caught up in this funny story. John Bevis tells a lot of tales this time of year when life slows down.

VOA: standard.2009.12.11

I actually do get worked up over these things because it drives me nuts because these are not hard problems to solve and yet consistently throughout society and your own laptops there are dozens of examples I'm sure of poorly designed software.

我确实对这些东西很生气,因为它令我发狂,因为这不是很难解决的难题,然而贯穿整个社会,在你自己的笔记本上，我确信有很多这样,设计地很挫的软件的例子。

哈佛公开课 - 计算机科学课程节选

There's a very interesting theme here and it's not too hard to pick up.

这其中有个很有趣的主题,我们不难发现

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But for the young who make up most of the population, learning this history has been hard to do - schools have up to now just not taught it.

VOA: standard.2010.04.19

Why do they end up not working hard enough?

人们因为什么才会努力工作呢

耶鲁公开课 - 博弈论课程节选

Revenues minus costs makes profits, and again, for those of you who are less familiar with economics, I'm hoping this is not really too hard but you can read up on it.

收入减去成本就是利润,对经济学不太了解的同学,我觉得这个很简单,你们都能听懂吧

耶鲁公开课 - 博弈论课程节选