在中世纪后期，人们习惯用磨料刮去羊皮纸的表面，把纸上的所有文字都擦得干干净净。
In the late Middle Ages, it was customary to scrape away the surface of the parchment with an abrasive, which completely wiped out any writing that was there.
请刮去鱼鳞。
在绘制线条的时候，需要用蚀刻素描笔刮去玻璃屏幕底部的铝粉。
To draw lines, the etch a Sketch's stylus scrapes aluminum powder from the underside of a glass screen.
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