动词短语
中文翻译：严格要求
同义词：
['strictly enforce', 'impose', 'demand', 'insist on']
例句：
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1. The company clamped down on overtime work to save money.
公司严格要求加班以节省开支。
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2. He clamped down on his critics and refused to listen to their criticisms.
他严格要求批评者，拒绝听取他们的批评。
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3. The government clamped down on illegal activities in the city.
政府严格要求城市中的非法活动。