crack down
phrasal verbcrack down (on somebody/something)
- to try harder to prevent an illegal activity and deal more severely with those who are caught doing it
竭力取缔；严厉打击；镇压 - Police are cracking down on drug dealers.
警方正在严厉打击毒品贩子。 - to crack down hard on crime
严厉打击犯罪
- Police are cracking down on drug dealers.