Lesson
01
课, 章节
a part of a book that is intended to be used for learning a specific subject
例子
She studied the math lesson carefully to understand the concept.
她仔细研究了数学课以理解这个概念。
02
课, 课程
a period of learning or teaching; a period of time in which someone is taught something
03
教训, 例子
punishment intended as a warning to others
04
教训, 寓意
the significance of a story or event
05
课, 任务
a task assigned for individual study
