对快运货物列车编组方案进行优化，有利于扩大快运货物列车开行规模和效益。

That is beneficial to the expanding the size of express freight train operation and the benefits.

youdao

对快运货物列车编组方案进行优化，有利于扩大快运货物列车开行规模和效益。

That is beneficial to the expanding the size of express freight train operation and the benefits.

youdao