1
- an amount of teaching given at one time; a period of learning or teaching课程, 教学单元：
an advanced lesson in maths
高级数学课程
a driving lesson.
驾驶课。
1.1
- a thing learned or to be learned by a pupil功课, 课业。
1.2
- a thing learned by experience教训, 见识：
lessons should have been learned from two similar collisions.
应该从另两起相似的撞车事件中汲取教训。
1.3
- an occurrence, example, or punishment that serves or should serve to warn or encourage可借鉴之事：
let that be a lesson to you!
以此为戒吧！
2
- a passage from the Bible read aloud during a church service, especially either of two readings at morning and evening prayer in the Anglican Church（英国圣公会）（早、晚）读经课。
短语
learn one's lesson
- acquire a greater understanding of the world through a particular unpleasant or stressful experience吸取教训。
teach someone a lesson
- punish or hurt someone as a deterrent惩戒, 教训：
they were teaching me a lesson for daring to complain.
他们因我胆敢抱怨而给我颜色看。
词源
Middle English: from Old French leçon， from Latin lectio （see LECTION）.