/ˈlesn ||; ˈlɛsṇ/noun[C] 1 a period of time when you learn or teach sth 课: She gives piano lessons. 她教钢琴。I want to take extra lessons in English conversation. 我要多上几课英语会话。a driving lesson 驾驶课
2 something that is intended to be or should be learnt 教训: I hope we can learn some lessons from this disaster. 我希望我们能从这场灾难中汲取一些教训。
learn your lesson→
LEARN→
TEACH