intercom

名词 intercom:

1. a communication system linking different rooms within a building or ship etc
   同义词：intercommunication system

in.ter.com

n.（名词）
An electronic intercommunication system, as between two rooms.
内部通话系统：电子内部通信系统，如两个房间间的

来源：
Short for intercommunication
intercommunication的简写