N a crew member of a goods or passenger train. His duties include controlling auxiliary braking power and inspecting the train (火车的)司闸员 [美国英语]
As the train had only recently been made up and few passengers were expected, there were only one or two brakemen waiting.
因为这班火车是最近新开的，乘客不会多，所以只有一两个列车机务员等在那里。
Brakemen check train brakes and other systems and equipment prior to train run, and assist railway conductors in activities en route.
列车机务员在火车运行检查刹车等系统和设备，并协助铁路指挥官途中的各项活动。
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