That is the sort of very interesting people, and I think of them so often because one will never see them again, never know what happened next.

他们就是这种很有意思的人，我常常想到他们，因为谁都不会再见到他们，也不会知道后来发生了什么。

youdao

I vowed you'd never know, I vowed you'd never have the chance to take him away from me.

我曾发誓决不让你知道，我曾发誓决不让你有机会把他从我身边带走。

youdao

You never know what's going to happen tomorrow. You never know who will be leaving you and never return ever again.

你永远不知道明天发生什么，你不知道谁将离开你并且永远不会回来。

youdao

So I've never felt like a minority because,as you know, minorities are never supposed to say anything unkind about one another."

VOA: special.2010.08.08

To put it differently, in order to know what "Dogs" means, you never had to learn the word "Dogs."

换个说法,为了知道"狗狗们"的意思,你不需要去学"狗狗们"这个词

耶鲁公开课 - 心理学导论课程节选

Because what we want to know is what is like to be permanently dead, and these people were never permanently dead.

因为我们想知道的是,永久死去是什么样的,而这些人并没有永久地死去

耶鲁公开课 - 死亡课程节选

In simplest terms, you never know what might happen to your job, and you never know what opportunities are out there waiting for you.

FORBES: Lead with Your Strengths and Build Your Personal Brand Online

Mr. RADLEY: If we never break the threshold, we'll never know what the answer is.

NPR: Marketplace Report: BP Sued for Propane Profiteering

When things get tough remember those who persevere never regret the effort, and those who quit never know how close they might have been.

FORBES: New Year's Resolution: Perseverance