intercom
n
system of communicationby means of microphones and loudspeakers, as used on an aircraft, in a large building (eg a factory), etc 内部通话系统或设备(用话筒及扩音器在飞行器、 工厂等大建筑物内进行通话的
make an announcement on/over the intercom 用内部通话设备宣布
[attrib 作定语]
an intercom system 内部通话设备.
🗣️ 情景例句
You must observe these simple rules.
你必须遵守这些简单的规定。
What sort of guarantees are there against late delivery?