N-COUNT The earpiece of a telephone receiver, hearing aid, or other device is the part that you hold up to your ear or put into your ear. (电话的)听筒; (助听器的)耳塞
The dongle ACTS as both an earpiece and a controller for the phone.
该适配器既是听筒,也是控制器。
Users can also use the speakerphone function or a wired earpiece to gain some distance.
用户可以通过开启免提功能或有线耳机来获得这个距离。
The case has a mini-LCD that shows battery and earpiece battery levels along with current Bluetooth status.
皮套还拥有一块微型液晶显示屏,显示电池和耳机电池电量、以及蓝牙当前状态。
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