object lesson (objectlessons)

• 1.  

  N-COUNT（可数名词） If you describe an action, event, or situation as an object lesson, you think that it demonstrates the correct way to do something, or that it demonstrates the truth of a particular principle. (作教训或原理的)实例 [oft N 'on/in' n]

  例：

  It was an object lesson in how to use television as a means of persuasion.

  这是利用电视作为劝导方式的一个实例。