line-terminal switchboard

例句：

1. 1. The line-terminal switchboard is used to control the flow of information between different systems.
   线路终端交换机用于在不同系统之间控制信息流动。
2. 2. The line-terminal switchboard was designed to improve communication efficiency in a large office environment.
   线路终端交换机被设计用来提高大型办公环境中的通信效率。
3. 3.The line-terminal switchboard was installed at the entrance of the building, allowing staff to quickly access information and communicate with each other.
   线路终端交换机安装在大楼入口处，使员工能够快速获取信息并相互沟通。