lower the boom 采取严厉措施，驯服，惩罚，禁止

【例句】
I don't understand this, why can't they lower the boom on these criminals so that they will think twice before they do something bad.
我真是弄不懂，他们为什么不能对这些罪犯更严格一些。这样他们才会在干坏事前先考虑一下。

We're going to have to lower the boom on those kids.
我们将不得不以非常严厉的态度对待孩子。