clamp down on造句

The team manager has been quick to clamp down on the merest hint of complacency.
球队主教练很快就消除了自满的小苗头。

The mayor had become ineffectual in the struggle to clamp down on drugs.
市长打击毒品的努力未见成效。

They clamp down on pickpockets.
他们严禁扒窃.