crack down:to take positive regulatory or disciplinary action
镇压；打击；严加管制; 严加治理Officers will crack down on lunatic motorists who speed or drive too close to the car in front.
警官们将严惩那些超速行驶或与前面车辆追尾的疯狂驾车者。
The government has cracked down hard on those campaigning for greater democracy.
政府严厉打击了那些争取更多民主的人。
原声例句：
Uh, hello? - You shouldn't have come back, Cowboy.
- 嗯 喂? - 你不该回来的 牛仔
They've cracked down hard since you left.
自从你走后 他们采取了更加严厉的防范措施
More guards, more patrols. You and your friends ain't ever gonna get outta here now.
加强了看守和巡逻 你和你的朋友永远不可能从这儿逃出去了
No and no. No one knows,
不知道 没有人知道
not even the cops who arrested me.
甚至连逮捕我的警察都不知道
You went to all this effort.
这一切都是计划好的
The Bureau is cracking down on corruption
局里正在加大力度打击各州立法机关
in state legislatures and judiciaries.
和司法机关中的腐败现象
