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1·He pushed a button on the intercom. Yes? came a voice.

他按了对讲机的一个按钮。“什么事？”传来一个声音。《柯林斯英汉双解大词典》

2·The intercom buzzed and he pressed down the appropriate switch.

对讲机嗡嗡地响起来，他按下了相应的开关。《柯林斯英汉双解大词典》

3·I pushed a button on my intercom and told Viktor Ilyushin that I needed to see him.

我按了一下对讲机上的一个按键，告诉维克多·伊留申我要见他。《柯林斯英汉双解大词典》

4·They called him on the intercom.

他们用内部通话系统呼叫他。《牛津词典》

5·Then, when I reached the office, I had to ring the intercom five times as I couldn't hear a response.

然后，我到达办公室时，我不得不按了五次对讲机，因为我听不到任何回应。

6·Suddenly the intercom went on.

突然，喇叭响了。

7·The game had just kicked off when his intercom buzzed.

但游戏刚开始他的对讲机就响了。

8·We were in his apartment. I went to the intercom.

我们在他的公寓里，我走到对讲机旁。

9·Monica: Hey. It's him. (On the intercom) Who is it?

嘿，是他。（对讲机）哪位？

10·The third part is the design of visual intercom system.

第三部分阐述的是可视对讲系统的设计。

(1)intercom system对讲机系统；内部通信系统