These days I am practicing it with my casette tape recorder at home.
这几天，我正在家里配合录音机练习。
No, that can't be it - it's simply that the casette is an entirely unknown quantity.
不会是这样的！然而，事实是，这是一盘完全未知的带子。
Data is recorded on casette tape, and can be transferred into a micro-computer through special interface for further processing.
数据记录在磁带上，可通过接口全部进入微计算机处理。
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