名词
中文翻译：警报
同义词：
['alert', 'warning', 'alarm bell']
例句：
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1. The fire department was called to the scene of the fire.
消防队被叫到火灾现场。
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2. She set off an alarm when she heard a strange noise outside.
她听到外面有奇怪的声音时，立刻拉响了警报。
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3. The alarm clock woke us up at 5:00 in the morning.
闹钟在早上五点把我们叫醒了。