名词短语
中文翻译：紧急求救信号
同义词：
['SOS', 'distress signal']
例句：
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1.The ship's radio operator received the SOS response from a distressed vessel.
船上的无线电操作员收到了一艘遇险船只发出的SOS信号。
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2. In case of emergency, we should always respond to the SOS signal.
在紧急情况下，我们应始终对SOS信号做出回应。
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3. The rescue team received the SOS response and immediately started searching for survivors.
救援队收到了SOS信号，并立即开始搜寻幸存者。