The ship was flying a distress signal.

这只船悬起遇难信号。

Air distress signal or interfering signal?

飞机遇险呼救还是干扰信号?。

The international morse code distress signal, S.O.S.

国际通用的莫尔斯电码遇险信号SOS。

Send out a distress signal; the ship is sinking.

发出求救信号吧，船正在下沉。

Send out a distress signal; the ship is sinking.

船在下沉，快发求救信号吧。