lesson

piano lessons.钢琴课

learn a lesson,受到教训

lesson plan,教学计划，教案

teach a lesson,给…一个教训

learn one's lesson,吸取教训

object lesson,实物教学课；实际教训

have a lesson,上课，上一节课

lesson notes,课程教案

lesson study,课例研究；授业研究

swimming lesson,游泳课

give a lesson,给…一个教训