ferromagnetic tape

例句：

1. 1. This tape is a great tool for recording audio.
   这块磁带是记录音频的好工具。
2. 2. The engineer used this tape to test the new circuitry.
   工程师用这块磁带来测试新的电路。
3. 3. The scientist played the tape back to check the accuracy of their findings.
   科学家播放磁带来检查他们发现的准确性。