As a multiple management and control system, its overall economic results are enormous.

作为一个综合的交通管理与控制体系，其经济效益是极其显著的。

youdao

As a multiple management and control system, its overall economic results are enormous.

作为一个综合的交通管理与控制体系，其经济效益是极其显著的。

youdao