warning signal
读音
汉语翻译
【计】 报警信号英语解释：
名词 warning signal:
- an automatic signal (usually a sound) warning of danger同义词：alarm, alert, alarum
例句：
- A colored flare used as a warning signal for trucks and railroad trains.信号火一种为卡车或火车作警告信号的有色火焰
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