clamp down on
US /klæmp daʊn ɑːn/
UK /klæmp daʊn ɑːn/
1.
嚴厲打擊, 取締
to become more strict about something, or to try to stop something bad from happening
:
•
The police are clamping down on illegal parking.
警方正在嚴厲打擊非法停車。
•
The government plans to clamp down on tax evasion.
政府計劃打擊逃稅行為。