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