名词
中文翻译：警戒区
同义词：
['protection zone', 'security zone']
例句：
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1. The police are guarding the VIP guests in the VIP zone.
警察正在VIP区域守护着VIP客人。
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2. The military has established a guard zone around the border to prevent incursions.
军方已经设立了一个边境警卫区，以防止入侵。
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3. The firefighters were guarding the building during the evacuation.
消防员在疏散期间守护着大楼。