speaker-reversal switch

例句：

1. 1.The speaker-reversal switch on the remote control is easy to use.
   遥控器上的扬声器反转开关很容易使用。
2. 2. The speaker-reversal switch was designed to improve sound quality.
   扬声器反转开关被设计用来提高音质。
3. 3. The speaker-reversal switch allows you to adjust the volume of your audio device.
   扬声器反转开关允许你调整你的音频设备的音量。