Important lesson, so that there would be some predictability in the results and I would have some, if you will, smoke test for knowing whether or not I was getting, my code seemed to be working.

这很重要，因为这样我就可以预测,结果会是多少了，如果你愿意，我们可以做烟气试验,来看我的代码是否工作正常。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now, this is an important lesson in what you do in science.

现在是你们科学教育中,的重要一课。

麻省理工公开课 - 热力学与动力学课程节选

And this is a hugely important lesson to learn.

这么问自己，这是不是一个隐藏的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Why are we doing this? Because there's an important lesson here.

为什么要学这些,因为有个重要结论

耶鲁公开课 - 博弈论课程节选

That's a very important lesson to keep in mind.

这一点非常重要,要牢记心中

耶鲁公开课 - 金融市场课程节选