speaker-phone
柯林斯词典
1. N-VAR 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. 免提电话
...a 10-channel cordless speakerphone with 13-number memory. …一台可存储13位电话号码的10频道无绳免提电话。
She put me on speakerphone and he heard me talking. 她让我来到免提电话前，因此他听到了我的讲话。
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