名词短语
中文翻译：求救信号旗
同义词：
['signal of distress', 'distress signal']
例句：
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1.The ship's flag of distress was raised when it ran into a storm.
当船只遇到暴风雨时，升起了船的求救信号旗。
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2. The rescuers spotted the distress signal and rushed to the scene.
救援队发现了求救信号，立即赶往现场。
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3.The captain ordered the crew to lower the flag of distress and prepare for immediate action.
船长命令船员放下求救信号旗，准备立即采取行动。