An international radiotelephone signal word used by aircraft and ships in distress.
呼救信号遇险的飞机，船只等使用的国际无线电呼救信号
Two weeks before Citadel was due for full operation, the station transmitted a distress signal.
两周前堡垒按预期完工运做，发射站传输出一个遇难信号。
Your body only then not because will hug thin lacks the energy to send out the distress signal.
你的身体才不会因为细抱缺乏能量而发出求救信号。
When the captain found the ship was rapidly sinking, he ordered his men to send out a distress signal.
船长发现船在迅速下沉时就命令船员发了遇险信号。
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