它教训我们道，一切都不曾，也从来不会被穷尽。

It teaches that all is not, has not been, exhausted.

youdao

从危机中还要吸取一个教训–我们都需要更好地理解对方的想法。

There's still one lesson to be learned from the crisis – we all need to better understand the thinking of the other side.

《柯林斯英汉双解大词典》

为了记住这令人心碎的教训，我们应该阻止火灾再次发生。

In order to keep the heart-broken lesson in mind, we should stop fires from happening again.

youdao

We could draw other lessons from this, but let me try and move on a little bit.

我们要从中吸取教训,所以我们还是要继续挖掘一下

耶鲁公开课 - 博弈论课程节选

But this is things we've learned as the years have gone past.

这是我们经过很多年经验教训积累才学到的。

麻省理工公开课 - 化学原理课程节选

Let's draw out some lessons from this.

让我们从中总结点经验教训

耶鲁公开课 - 博弈论课程节选