intercom [ˈɪntərkɑ:m]

例句:

• "Ladies and Gentlemen," booms the intercom.
  来自NEWYORKER
• to announce sth over the intercom
  通过内部通话系统宣布
  
• He pushed a button on the intercom. "Yes?" came a voice.
  他按了内部对讲机上的一个按钮。“有什么事吗？”一个声音问道。
  
• The intercom buzzed and he pressed down the appropriate switch.
  对讲机发出嗡嗡声，他按下了相应的开关。
  
• He pressed the intercom button, but there was no response.
  来自NEWYORKER
• His intercom buzzed; he flipped the switch on his console. 'Yes?'
  来自R. Ludlum