The teacher used a reel-to-reel tape to record the students' performances for future reference.
老师使用盘式磁带来录制学生的表演，以便将来参考。
In the early days of audio recording, reel-to-reel tapes were the standard for capturing sound.
在音频录音的早期，盘式磁带是捕捉声音的标准。