名词
中文翻译：本地电话交换系统
同义词：
['local exchange system', 'local telecommunications system']
例句：
-
1. The local telephone switching system is responsible for handling calls within the city limits.
本地电话交换系统负责处理城市范围内的电话呼叫。
-
2.The local telephone switching system was upgraded to support more advanced communication technologies.
本地电话交换系统升级，以支持更先进的通信技术。
-
3. The local telephone switching system has been improved to provide better customer service.
本地电话交换系统已改进，以提高客户服务。