recording card

例句：

1. 1.The teacher used a recording card to explain the new concept.
   老师使用了一张录音卡片来讲解新概念。
2. 2. She recorded her voice on a recording card for future reference.
   她把声音录在了一张录音卡片上，以备将来参考。
3. 3. The student used the recording card to practice his speech.
   学生用这张录音卡片练习他的演讲。