to tell someone about something again

The story has been retold many times. 这个故事被重复讲了很多次。

Retelling traumatic events can stir up negative emotions. 重述创伤性事件会激起负面情绪。

to tell someone a joke that someone has told you, or to repeat a joke you have already told before

It's better to produce new material than to retell old jokes. 制作新材料总比重讲旧笑话好。