record autochanger

例句：

1. 1.The recorder is used to make records.
   磁带录音机用于制作录音。
2. 2. She recorded the event for her diary.
   她把事件录下来记在她的日记里。
3. 3. The recorder has a microphone and a speaker.
   录音机有麦克风和扬声器。