"I want you guys to understand I will never hesitate to use force to protect the American people or our vital interests.

VOA: standard.2009.11.13

I've never understand this until I've taught it.

如果我没这样教的话,我永远都不会明白。

麻省理工公开课 - 媒体、教育、市场课程节选

When you understand a sentence I said you have to have the capacity to understand a sentence even if you've never heard it before.

当你在理解我所说的一句话时,你必须要拥有理解这句话的能力,即使你在之前从未听到过这句话

耶鲁公开课 - 心理学导论课程节选

So, we could create and understand sentences that we never heard before.

因此,我们能够创造和理解,那些我们未曾听过的句子

耶鲁公开课 - 心理学导论课程节选