crack down
柯林斯词典
1. PHRASAL VERB 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。
2. →see also crackdown
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