crack k down on打击
crack-down[法] 制裁;打击;制裁
the crack of down破晓
procedural crack-down程序性制裁
crack-down detail严厉手段
the e crack of down破晓
crack down on打击;镇压;提出要严打
crack down on scalper打击票贩子
crack down youth crime降低犯罪
PHRASAL VERB（动词词组） If people in authority crack down on a group of people, they become stricter in making the group obey rules or laws. 严加管制; 严加治理
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。
（） → see also crackdown