动词短语
中文翻译：锁定并清空
同义词：
['lock and load', 'lock down', 'secure', 'lock out']
例句：
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1. We need to lock the door before leaving the house.
我们需要在离开房子之前把门锁上。
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2. The police have locked down the area after the riot.
在骚乱之后，警方已经封锁了该地区。
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3. She locked and loaded her gun before going into the room.
她进入房间前先上了膛。