speakerphone
n. 扬声电话（内置麦克风和扬声器，使用时无须拿起听筒）
复数 speakerphones
例句
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。
《柯林斯英汉双解大词典》
One group was left undistracted while the other had to engage in a conversation using a speakerphone.
一组人不受干扰，而另一组人必须使用免提进行对话。
Speaker for speakerphone and music.
内置扬声器支持免提以及音乐播放。
