idiom
give someone a dose of their own medicine
以同样糟糕的方式对待某人,就像他们对待别人一样
Meaning
to treat someone the same bad way they treated others
Example
He was rude to everyone, so I **gave him a dose of his own medicine**.
他对每个人都很粗鲁,所以我**给了他一剂自己的药**。