It was a crude machine which was not suited for use as an office copier because it required a series of hand operations 3 or 4 minutes in length to produce a single copy.

 
  • 这是一个粗糙的不适合办公室用的复印机,因为它需要三四分钟长的时间做一系列手工操作后才能印出一张。
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