Supporters of the new supersystems argue that these mergers will allow for substantial cost reductions and better coordinated service.

支持组建超大型铁路集团的人认为，兼并将带来成本的大幅降低，服务项目的更好协调。

Supporters of the new supersystems argue that these mergers will allow for substantial cost reductions and better-coordinated service.

4. 新超级系统的支持者认为，这些合并将大幅降低成本并改善服务协调。