transistor megaphone

例句：

1. 1. The transistor microphone is used in various applications, including recording and broadcasting.
   晶体管麦克风被用于各种应用，包括录音和广播。
2. 2. The transistor microphone is a popular choice for recording studios due to its high-quality sound.
   由于其高质量的声音，晶体管麦克风是录音室的热门选择。
3. 3. In the concert hall, the transistor microphone helps to capture the audience's voices and enhance the performance.
   在音乐会厅，晶体管麦克风帮助捕捉观众的声音，增强表演效果。