名词
中文翻译：Unknown
同义词：
['guardian', 'protector', 'watchman']
例句：
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1. The provost guard was responsible for the security of the school building.
校监卫队负责学校建筑的安全。
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2. The provost guard patrolled the campus at night to ensure safety.
校监卫队夜间巡逻校园，确保安全。
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3. The provost guard was called upon to assist the police in apprehending a thief.
校监卫队被召唤协助警方逮捕一名小偷。