名词
中文翻译：无线电蜂鸣器
同义词：
['radio', 'horn例句：1. The police used a radio beeper to alert the public about the emergency.（警方使用无线电蜂鸣器向公众发出紧急通知。）']
例句：
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1. The police used a radio beeper to alert the public about the emergency.
警方使用无线电蜂鸣器向公众发出紧急通知。
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2. The old man kept his radio beeper with him at all times.
老人总是随身携带他的无线电蜂鸣器。
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3. The car's engine started with a loud beep from its radio beeper.
汽车的引擎启动时，从它的无线电蜂鸣器发出了响亮的响声。