Appurtenant work, which supples a system of function as management, charge, monitoring, maintaining, rescue and service, is a major component part of expressway.

附属区工程是高速公路重要的组成部分，是为了高速公路的正常通行提供管理、收费、监控、养护、拯救、服务等一系列功能。

youdao

Appurtenant work, which supplies a system of function as management, charge, monitoring, maintaining, rescue and service, is a major component part of expressway.

附属区工程是高速公路重要的组成部分，是为了高速公路的正常通行提供管理、收费、监控、养护、拯救、服务等一系列功能。

youdao

Appurtenant work, which supplies a system of function as management, charge, monitoring, maintaining, rescue and service, is a major component part of expressway.

附属区工程是高速公路重要的组成部分，是为了高速公路的正常通行提供管理、收费、监控、养护、拯救、服务等一系列功能。

youdao