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

They knew how to cultivate the grape to make excellent wine; they knew how to cultivate olives to be able to make superb olive oil and how to process them to produce the result.

他们懂得如何培育葡萄来酿造佳酿,他们也懂得如何培育橄榄树,以及制造优良的橄榄油,同样懂得如何将这些工艺更加精细化

耶鲁公开课 - 古希腊历史简介课程节选