我想这个故事的寓意是提醒购买者当心。

I think the moral of the story is let the buyer beware.

《柯林斯英汉双解大词典》

这个故事的寓意是：一定要听母亲的话！

And the moral of the story is: always mind your mother!

《牛津词典》

故事的寓意：我们应该做什么呢？

The moral of the story: what should we do?

youdao

This is the kind of story that has a moral. It's a feel-good story.

这是一个有寓意的故事，一个正面的故事。

耶鲁公开课 - 文学理论导论课程节选