master communication center of railway whole administration

例句：

1. 1. The master communication center of therailway is responsible for handling all communication issuesrelated to the railway.
   铁路总局通信中心负责处理与铁路相关的所有通信问题。
2. 2. Themaster communication center of the railway has beenupgrading its technology to improve service quality.
   铁路总局通信中心一直在升级其技术以提高服务质量。
3. 3.The master communication center of the railway isa crucial part of the transportation system,ensuring smooth communication between different parts of thecountry.
   铁路总局通信中心是交通运输系统的重要组成部分，确保了全国各地之间的顺畅沟通。