An intercom is a small talking system that lets people speak to each other from different rooms, floors, or parts of a plane, without using a normal outside phone. In Taiwan apartment buildings, the box by the door that lets you talk to someone downstairs is an intercom.

An intercom對講機(intercom) is a small talking system是一種小型通話系統 that lets people speak to each other讓人們可以互相講話 from different rooms, floors, or parts of a plane不管是不同房間、樓層，還是飛機的不同部位, without using a normal outside phone不需要用一般對外的電話。In Taiwan apartment buildings在台灣的公寓大樓裡, the box by the door門邊的那個盒子 that lets you talk to someone downstairs讓你可以跟樓下的人講話 is an intercom就是intercom(對講機)。

Offices, factories, and aircraft use them too. You can also use it as a verb: “I’ll intercom you” means “I’ll call you on that inside system.” It is everyday and a little technical, not fancy.

Offices, factories, and aircraft辦公室、工廠，還有飛機 use them too也會用這種系統。You can also use it as a verb你也可以把它當動詞用: 'I'll intercom you''I'll intercom you'（我用對講機叫你） means意思是 'I'll call you on that inside system.''我會用那套內部系統打給你'。It is everyday and a little technical這個字很日常，帶點技術感, not fancy不是什麼很高級的詞。

Though actually, people sometimes call any inside building phone an intercom, even when it is just a normal inside line. It is not the internet, and it is not a mobile phone.

Though actually不過其實, people sometimes call any inside building phone an intercom人們有時候會把大樓裡任何一支內線電話都叫做intercom, even when it is just a normal inside line即使它只是普通的內線電話。It is not the internet它不是網路, and it is not a mobile phone也不是手機。