内部通话系统(或设备);对讲机 An intercom is a small box with a microphone which is connected to a loudspeaker in another room. You use it to talk to the people in the other room.
I unplug phones, computers, intercoms and fax machines, risking opprobrium, because I know that if I don't lose touch with some of the people who are trying to reach me, I'll lose touch with myself. 我把电话、电脑、对讲机、传真机都拔了,冒着耻辱的危险,因为我知道如果我不和那些要联系我的人失去联络,我将失去的是自己。
Intercoms, wiring-everything would be shot. 内部通讯联络系统和电线都会被毁坏。
Installing intercoms at residential buildings can prevent the free flow of people without fixed duties and stop criminals at the door. 在居民楼安装楼宇对讲,可阻止闲杂人员自由出入,将犯罪分子挡在楼门之外。