do one's lessons

基本解释

Now that's one of the most basic lessons, you can't do it.
现在是最基本的一课，你无法做到。
If there is one line that could sum up all the varied and curious lessons I've learned in business, it's this: scale doesn't matter—people do.
如果要用一句话，把我在商场上学到的所有多样、奇特的教训总结起来，那么这句话会是：规模不重要，事在人为。
One of the lessons from this year's elections in Latin America is that the region's voters, like those elsewhere, dislike being told what to do by outsiders.
今年的拉美国家选举中有一条教训就是，当地的选民和其他各地的一样，都不喜欢听局外人指手划脚。

Now that's one of the most basic lessons, you can't do it.
这是最基础的知识,这是不可能的
耶鲁公开课 - 金融市场课程节选