名词
中文翻译：无线电信号灯
同义词：
['radio signal', 'radio transmitter', 'radio station']
例句：
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1. The police useda radio beacon to guide the rescuers to the location.
警方使用无线电信号灯引导救援人员到达指定地点。
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2.The old man was using his radio beacon to communicate with his family.
这位老人正在使用他的无线电信号灯与家人通信。
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3. The military used radio beacons during World War II to keep track of their troops.
在第二次世界大战期间，军队使用了无线电信号灯来跟踪他们的部队。