A switchman sat in a small shack on one side of the river where he operated the controls to turn the bridge and lock it into place as the train crossed .

管理员坐的地方是在桥一边的小屋，他的 责任是在火车 未到河边 之前把桥 放下，并且将它锁定。

Good morning said the railway switchman .

“你好。” 扳道 工说道。

No one is ever satisfied where he is said the switchman .

“人们是从来也不会满意自己所在的地方的。” 扳道 工说。

The switchman mistook the slow train for the express train .

扳道 工把慢车误认为快车了。