microphonerelay

例句：

1. 1.The engineer used a microphone relay to improve the audio quality of the recording.
   工程师使用麦克风中继器提高了录音的音质。
2. 2. During the broadcast, the microphone relay was responsible for transmitting the sound from the studio to the audience.
   在广播期间，麦克风中继器负责将声音从演播室传输到观众。
3. 3. The microphone relay helped to ensure that the sound was clear and consistent throughout the event.
   麦克风中继器帮助确保了活动期间的声音清晰且一致。