Scratch So, we looked last week at Scratch, very briefly, but hopefully you found if you've dived in already that the interface is fairly intuitive and it really just allows you to implement ideas that you conjure up in your mind.

我们上周非常简略地提到了，不过我希望你们热切的投入了进去了,那个界面是相当直观的,相信我，这真的可以让你实现你,大脑中的构想。

哈佛公开课 - 计算机科学课程节选

There's some probability that it can get very, very close the nucleus, and that probability is actually substantial.

有一定的概率,它能非常非常接近原子核，这个概率是相当大的。

麻省理工公开课 - 化学原理课程节选

Oftentimes, inventions that seem, in the abstract, to be good ideas may be impossible because something that you have to do to make it actually come into practice is too expensive and so it's not economic to produce the invention.

通常在理论上,创新固然不错,但却很难实现,因为把创意变成现实,花费会相当的昂贵,实现这样的创意非常不合算

耶鲁公开课 - 金融市场课程节选

It's important--that's one reason why we want policies that encourage equality of incomes-- not necessarily equality, but reasonable equality-- because the people with very low wealth have a very high marginal utility of income and people with very high wealth have very little.

这非常重要,我们需要通过政策,来引导收入公平的一个原因就是这个,不是绝对的平等,是相对的平等,因为那些低收入的人群,对收出的边际效应相当的高,而高收入人群的则小得多

耶鲁公开课 - 金融市场课程节选