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Signalman
01
a person who operates and maintains signal equipment along railway lines
例子
The signalman's job required attention to detail and quick decision-making.
He reported a malfunction to the signalman for immediate repair.
They installed new digital signals under the supervision of the signalman.
She worked closely with the signalman to ensure smooth train operations.
The signalman adjusted the semaphore signals for an approaching train.
