OK. The process of writing is exercising both halves of your brain, and it's actually helping you learn, and so taking notes is really valuable thing.

好的，记笔记的过程同时锻炼了,你的左右脑，而且实际上帮助了你的学习，所以记笔记真的是一件特别有价值的事情。

麻省理工公开课 - 计算机科学及编程导论课程节选

There's a kind of aspect of value for many of us where we feel that something's especially valuable if it won't endure, if it's fragile, or if it's rare.

对我们许多人来说，有一种价值的方面在于,如果某事物不是持续的，如果是易碎的,或者是稀有的，我们就觉得它特别有价值。

耶鲁公开课 - 死亡课程节选

They can be on store shelves for a long period of time, and that has to do with the economics of food, especially food available to the poor, which we'll discuss later.

因此可以在商品货架上销售很长一段时间,这也与食物的经济学价值有关,特别这类食物穷人也买得起,这个我们以后会讨论

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选