Almost the first lesson they learn is how to dissociate emotion from reason.

第一堂课上他们学的几乎就是如何将情感和理智分开。

《柯林斯英汉双解大词典》

It's probably not something most graduation speakers would say, but it's the first lesson of growing up.

这可能不是大多数毕业演讲的人会说的话，但这是成长的第一课。

youdao

To be honest, the first lesson was not a great success.

老实说，第一节课并不是很成功。

youdao

The first lesson was don't shoot towards the middle of the goal and the second more general lesson was what?

结论一是不要从中路射门,第二个更普遍的结论是什么

耶鲁公开课 - 博弈论课程节选

504-- this whole course, is about this transformation, as I mentioned during the first lesson.

504这门课程的重点，是关于转变，正如我在第一课中提到的。

哈佛公开课 - 幸福课课程节选

What was the first lesson of the class? Shout it out please.

本节课第一个结论是什么,大声说出来

耶鲁公开课 - 博弈论课程节选

Example: Every student pilot learns how to read an altimeter during the first lesson.

FORBES: My Ken Lay

The first lesson then is never to surrender or give any quarter to lies.

CENTERFORSECURITYPOLICY: Richard Goldstone and Palestinian statehood

The first lesson is that the next big thing can come from the most unexpected places.

ECONOMIST: Schumpeter