After the first month, you should be able to get away with one lesson a week.

第一个月之后，每周上一次课就可以了。

《牛津词典》

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

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。

《柯林斯英汉双解大词典》

If there is one lesson everybody should take away from the credit crunch, it is that central bankers, no less than dentists, are only human.

如果说有一个教训是每个人都应该从信贷危机中吸取的，那就是央行行长和牙医一样都是凡人。

youdao

"If there's one lesson that we've learned, it's that unfettered market where people are taking huge risks and expecting taxpayers to bail them out when things go sour is simply not acceptable."

VOA: special.2010.04.16

One lesson was, do not play a strictly dominated strategy.

其中的一个结论是,不要采用严格劣势策略

耶鲁公开课 - 博弈论课程节选

We know, from the very first lesson of the class last time, that no one should choose these strategies.

从上堂课中,我们学到了,不要采用这类策略

耶鲁公开课 - 博弈论课程节选

One lesson for the teachers: Corporate America is a tougher judge of character than they.

FORBES: Health, wealth and technology

Economics in One Lesson and be able to discuss and apply the principles therein.

FORBES: The Real Lessons For The Republicans From The 11/6 Elections

One lesson that Nokia learnt from this painful experience was to be wary of acquisitions.

ECONOMIST: The fine art of being prepared