signalman

/ˈsɪɡnəlmən/ 11
A signalman is a person whose job is to control the signals on a particular section of a railway. (铁路段上的)信号工

noun [专属名词]信号员;信号手

They had to post a signalman at the entrance to the tunnel.
他们不得不在隧道入口处安置一名信号员站岗。

单词造句:
网友用“Signalman”造句精选
The signalman on the ship wigwagged the good news to the other ship. 这艘船上的信号员用旗语向另一艘船发送好消息。
The signalman 's signature sign is significant to the vacant vacation. 信号员的签字符号对空假期具有重要意义。