speaker phone

基本解释

Don't use a speaker phone unless absolutely necessary.
若非必要，不要使用电话的免提功能。
Land lines: several phones to allow people to make and receive phone calls, with speaker phone capability.
固定电话线：多放置几个带有扬声器功能的电话以允许人们自由使用。
Ditched the landline? Use a hands-free device like a headset or talk on speaker phone (preferably the former when in public).
除了座机，用免提设备像耳机或者用扬声器电话交谈（公开场合前者更好）。

At a news conference, Speaker Nancy Pelosi said she had just received a phone call from the president, and she paid tribute to the president's leadership.

There's no need to schedule formal meetings or herd everyone around a speaker phone.
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The phone also had a high screen-to-frame ratio of 0.693, a 13-megapixel camera, and better quality speaker phone capabilities for hands-free calls.
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One of the biggest surprises, however, was the speaker phone, which was loud, clear and one of the best we've heard in a long time.
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A speakerphone is a telephone that has a microphone and a loudspeaker, allowing you to talk to someone without putting the phone to your ear, as well as allowing other people to hear the person you are talking to.