I set up a theoretical framework here ... and I wanted to give you-- I mentioned oil because it seems to make it, to me, so clear what we're talking about here.

我建立了个理论框架,然后我想讲给你们听-,我之前提到石油是因为它适用于这个框架，非常清晰阐述我们所谈到的内容。

耶鲁公开课 - 金融市场课程节选

These are the basic theoretical structures that you incidentally need for the problem set, ... the first problem set. The first problem set-- I guess you've--you can turn in your first problem set here before you leave because it was due today.

这些是基础的理论框架,你会在做习题的时候用到它们，第一道练习。。。第一次练习是-,第一次练习作业的截止日期是今天,所以你们在今天在离开前把作业交上来。

耶鲁公开课 - 金融市场课程节选