zhè / tiáo / tiě / lù / yǐ / qián / zhǔ / yào / shǐ / yòng / chái / diàn / jī / chē / qiān / yǐn / huò / yùn / liè / chē

这条铁路以前主要使用柴电机车牵引货运列车。

This railway used to rely mainly on diesel-electric locomotives to pull freight trains.