lesson
/ˈles(ə)n/📚 1332 59 3中考高考A lesson is a fixed period of time when people are taught about a particular subject or taught how to do something. 课
noun [抽象名词]一节课，一课时；教学单元，（课本中的）课；经验，教训；（教堂礼拜中的）《圣经》选读
You use lesson to refer to an experience which acts as a warning to you or an example from which you should learn.
教训
verb [vt. 及物动词]<古>给…上课；教训，训诫
If you say that you are going to teach someone a lesson, you mean that you are going to punish them for something that they have done so that they do not do it again.
给某人一个教训
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