distress signal [电] 呼救信号
- Send out a distress signal; the ship is sinking.
船正在下沉,发遇险信号吧。 - Send out a distress signal; the ship is sinking.
船正在下沉,发遇险信号吧。 - Unable to move, he sends a distress signal with a range of two miles.
他持续送出求救讯号,讯号的有效範围是半径二公里。
distress signal[ noun ]
an internationally recognized signal sent out by a ship or plane indicating that help is needed
<noun.communication>