n.信号手
The signalman on the ship wigwagged the good news to the other ship. 那艘船上的信号员用旗语向另一艘船发送好消息。
The signalman left his cabin before attending to his signals and so committed a grave breach of duty. 信号员没有发完信号就离开了他的小木房，因此犯了严重的玩忽职守的错误。
