动词短语
中文翻译：封锁
同义词：
['seal off', 'restrict', 'clamp down', 'shackle down']
例句：
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1. The governmenthas locked down the city to prevent the spread of the virus.
政府已经封锁了城市以防止病毒的传播。
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2. The lockdown measures have been lifted, allowing people to resume their normal lives.
封锁措施已经解除，人们可以恢复正常生活。
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3. The pandemic has locked down many businesses, causing significant economic disruption.
大流行病已导致许多企业关闭，造成严重的经济中断。