A speakerphone is a phone you can talk on without holding it to your ear. It has a loudspeaker so everyone in the room hears the other person, and a microphone good enough to pick up voices from across the room. The classic picture is the star-shaped or round unit sitting in the middle of a meeting table.

A speakerphone is a phone免持聽筒是一種電話 you can talk on without holding it to your ear你不用拿著貼在耳朵上就能講話。 It has a loudspeaker它有喇叭 so everyone in the room hears the other person讓房間裡的每個人都聽得到對方講話, and a microphone good enough to pick up voices from across the room還有一個夠靈敏的麥克風，能收到房間另一頭的聲音。 The classic picture is the star-shaped or round unit最經典的畫面就是那種星形或圓形的機器 sitting in the middle of a meeting table擺在會議桌中間。

In real life, though, the far commoner use is about your own mobile. Every mobile phone has this function built in, and what people actually say is 'on speakerphone' or, even more often, just 'on speaker': 'Put her on speakerphone.' 'You're on speaker — my wife can hear you too.' 'Sorry, I'm driving, you're on speakerphone.' So treat 'on speakerphone' as the phrase to learn, not the bare noun.

In real life, though不過在現實生活中, the far commoner use is about your own mobile更常見的用法其實是講自己的手機。 Every mobile phone has this function built in每支手機都內建這個功能, and what people actually say is 'on speakerphone' or, even more often, just 'on speaker'大家實際上會說的是 'on speakerphone'，或更常直接說 'on speaker': 'Put her on speakerphone.'像是「把她開擴音」 'You're on speaker — my wife can hear you too.'「你現在是擴音喔——我太太也聽得到你講話」 'Sorry, I'm driving, you're on speakerphone.'「不好意思，我在開車，你現在是擴音」 So treat 'on speakerphone' as the phrase to learn所以要學的是 'on speakerphone' 這整個片語, not the bare noun而不是單獨那個名詞。

That last example shows why the word matters socially. Telling someone they are on speakerphone is a small piece of politeness — it warns them that other people can hear, so they do not say something private by accident. English speakers do this quite carefully, and a learner who never says it can cause an awkward moment.

That last example shows why the word matters socially最後那個例子說明了這個字在社交上為什麼重要。 Telling someone they are on speakerphone is a small piece of politeness告訴對方「你現在是擴音」是一種小小的禮貌 — it warns them that other people can hear它讓對方知道還有別人聽得到, so they do not say something private by accident這樣他們才不會不小心說出隱私的事。 English speakers do this quite carefully說英文的人在這方面相當謹慎, and a learner who never says it can cause an awkward moment從來不這樣提醒的學習者，可能會造成尷尬的場面。

As a noun on its own, speakerphone is most natural for the dedicated conference-room device.

As a noun on its own當它單獨當名詞用時, speakerphone is most natural for the dedicated conference-room devicespeakerphone 最自然的意思是指那種專門的會議室設備。