名词短语
中文翻译：用于警告火车接近的无线电通信
同义词：
['train warning radio', 'train alert radio']
例句：
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1.The police used a radio communication to warn the public about the impending storm.
警方使用无线电通信向公众发出暴风雨即将到来的警告。
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2. The train's whistle was heard over the radio communication for warning of approaching trains.
火车的汽笛声通过无线电通信被听到，用于警告即将到来的火车。
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3.The emergency broadcaster used radio communication for warning of an approaching flood.
紧急广播员使用无线电通信来警告即将到来的洪水。