bān / dào / gōng / gēn / jù / diào / dù / zhǐ / lìng / gǎi / biàn / le / liè / chē / de / xíng / shǐ / fāng / xiàng扳道工根据调度指令改变了列车的行驶方向。The switchman changed the train's direction according to the dispatcher's instructions.