送话器

例句：

1. 1. The engineer used a receiver to pick up the signal from the satellite.
   工程师使用一个接收器来从卫星上接收信号。
2. 2. The teacher asked the students to use their microphones to record their answers.
   老师要求学生们使用他们的麦克风来录音他们的答案。
3. 3. The scientist used a microphone to capture the sound of the bird's singing.
   科学家使用一个麦克风来捕捉鸟的歌唱声。