名词
中文翻译：Unknown
同义词：
['Radio signal', 'Locomotive signal', 'Radio-controlled signal', 'Radio-controlled signal']
例句：
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1. The train's radio locomotive signal is flashing red to alert the driver.
列车的无线电轨道信号正在闪烁红色以提醒司机。
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2. The engineer used a radio locomotive signal to communicate with the other trains.
工程师使用无线电轨道信号与其他列车进行通信。
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3. The new safety device uses radio locomotive signals to prevent accidents.
新的安全装置使用无线电轨道信号来防止事故。