遇险信号

例句：

1. 1. The ship received a distress signal from the shore.
   那艘船收到了来自岸边的危险信号。
2. 2. The pilot noticed the malfunction and sent out a distress signal.
   飞行员注意到了故障并发出了求救信号。
3. 3. The rescue team responded to the distress signal immediately.
   救援队立即响应了求救信号。