signalman

US /ˈsɪɡ.nəl.mən/
UK /ˈsɪɡ.nəl.mən/
"signalman" picture
1.

信号员, 信号手

a person who operates signals on a railroad or at a port

:
The signalman waved his flag to indicate the track was clear.
信号员挥舞旗帜,示意轨道畅通。
He worked as a signalman for over thirty years.
他做了三十多年的信号员