当你有了自己的家，也许你才能理解。

When you have your own family, perhaps you will understand.

youdao

只有通过亲身体验，你才能理解志愿服务有多么重要。

Only by your own experience can you figure out how important volunteer work is!

youdao

我的意思是想时机成熟了才对你们说而且用正确的方式，那样你才能理解。要不然你也不会独自待在后院了。

I guess I was hoping to tell you at just the right time and just the right way, so you'd understand and not end up out here on the deck all alone.

youdao

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