They're these building blocks that support the melody and they have to change for that melody to be consonant all the time.

这些和弦是旋律的基础,和弦的变化必须和旋律保持协调一致

耶鲁公开课 - 聆听音乐课程节选

So basically, the whole society was spending all of the time raising enough food just to support life and there was only 5% left over and that ended up being used in ways like this.

基本上,整个社会全部时间都被用于积累足量食物,这仅是为了维持生计,只剩下5%的时间,被用来建造金字塔,为法老服务

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

We're trying to understand exactly what changes in your brain when you learn and how those changes persist over time to support memory. And one thing that we know which helps explain why some things are easier to remember than other is that learning is not a unitary process.

我们一直都想查明，学习的时候，大脑到底发生了什么变化，这些变化是如何长时间控制记忆的,我们都知道，学习的过程不是一元化的,这就是为什么有的东西好记，有的东西难记。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选