telephone exchange 

英汉解释

电话局；电话交换台

同义词

n. central，exchange

参考例句

1. Why the dial-up connection could not apply at telephone exchange?
为何有总机转接就不能使用拨号连线功能？
2. Afterward, two people through the long time's telephone exchange, the mutual tolerance and understanding, they now have become finally the very good friend.
后来，两人通过长时间的电话交流，终于互相谅解，他们俩现在成为了很好的朋友。
3. With the applications of programmed telephone exchange machine, intranet(LAN)and modern wireless communication technology, a general communication system for doctors and nurses is developed.
利用医院内部完善的程控交换机、计算机局域网优势，结合现代无线通讯技术，组成医护综合通讯服务系统。

英英解释

n.
  1. a workplace that serves as a telecommunications facility where lines from telephones can be connecte

网络释义

telephone exchange
电话局; 电话交换; 电话交换台; 总机;
conference telephone tandem exchange
议电话汇接机;
telephone lock exchange center
电话当地交换中心;
telephone local exchange center
电话局部交换中心;
common battery telephone exchange
共电式电话交换机;