electronic multiple automatic exchange

例句：

1. 1.The electronic multiple automatic exchange system is designed to improve communication between different networks.
   电子多自动交换系统旨在改善不同网络之间的通信。
2. 2.The new electronic multiple automatic exchange system has greatly improved the efficiency of data transmission.
   新的电子多自动交换系统大大提高了数据传输的效率。
3. 3.In this case, the electronic multiple automatic exchange system was used to facilitate the transfer of sensitive information.
   在这种情况下，电子多自动交换系统被用来促进敏感信息的转移。