They might articulate a need or a desire, but what we have to do is understand all the technology ingredients and how they're evolving.

他们可能会提出要求或是愿望，我们所要做的事情是搞懂,所有技术成分，以及它们如何演变。

斯坦福公开课 - 戴尔CEO-Michael.Dell谈创业和发展课程节选

But what you need to understand about the Greeks is that they don't eat a lot of meat.

但是你们需要理解的是,希腊人并不常食肉

耶鲁公开课 - 古希腊历史简介课程节选

We'll talk about some chemistry today, what DNA molecules are like, why they have the behavior that they do, and you need to understand this in order to understand how you manipulate DNA.

今天我们会谈到一些化学结构,比如DNA分子的形态,它们为什么会以这种形态存在,你必须先掌握这些,才能理解如何操控DNA

耶鲁公开课 - 生物医学工程探索课程节选