名词
中文翻译：夜警
同义词：
['night watch', 'night guard']
例句：
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1.The police were called to the scene of the accident at midnight.
警察在午夜被叫到事故现场。
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2. She was woken up by the night alarm.
她被夜间警报吵醒。
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3. He always sets an early night alarm to ensure he gets enough sleep.
他经常设置一个早的夜间警报以确保他得到足够的睡眠。