They work as hard as anyone, they just know when to quit and enjoy themselves, Oh, what a beautiful building!

他们和所有人一样拼命工作，但他们知道什么时候停下来享受生活。好漂亮的房子！

youdao

why,when we do not sleep, we do not function well. We just do not know much about sleep at all."

VOA: special.2009.08.26

And then the last thing I want to do, is just decide, you know, what do I do when I'm done.

决定，你知道的，当我完成循环后去做什么。

麻省理工公开课 - 计算机科学及编程导论课程节选

because when I got in, I just like, I, I didn't know Berkeley's such a great school.

因为当我进来的时候，我并不知道伯克利是这么大的一个学校。

学习化学专业的原因 - SpeakingMax英语口语达人

"You just never know when his game turns, " he told AFP.

CNN: Level-par finish leaves frustrated Tiger off the pace

Investors just want to know when it will end.

FORBES: Chevron's Expensive Problems

It looks like the camera fanatics at Olympus just don't know when to stop.

ENGADGET: Olympus announces new FE and mju range 12 megapixel shooters