当你回想曾经你过度忧虑的时刻，你的担心真为你解决了任何问题吗？

When you think back in your life to The Times when you worried excessively, did your worrying actually solve anything?

youdao

曾经你结识的许多朋友，这就是你构建一个稳固的团队所带来的喜悦。 这些朋友会让结识新朋友变得更容易。

The joy of building a strong group, is that once you build more friends, those friends make it easier to meet new people.

youdao

我曾经见过你母亲。

I once met your mother.

《牛津词典》

You can go up and look at it because your parents probably bought one and it's still up there.

你可以上去看看,因为你的父母可能曾经买过一个,但是被束之高阁。

耶鲁公开课 - 金融市场课程节选

But if you want to know the answer, and I knew it, but I forget what it is-- it doesn't matter.

如果你想知道答案,我曾经是知道答案的,不过我忘掉了,这不重要

耶鲁公开课 - 心理学导论课程节选

To be honest, especially those of you less comfortable here, if you've ever struggled with some program or struggled with some piece of software, oh it's alright, it's not your fault.

说实话，尤其是对那些在这里上课有些吃力的同学，如果你曾经使用哪个程序或软件有困难,好吧，那不是你的错。

哈佛公开课 - 计算机科学课程节选