scuffing of cylinder bore

例句：

1. 1. The car's tires were scuffed onthe asphalt.
   汽车的轮胎在柏油路上刮擦了。
2. 2. The oldbooks were scuffed by the children.
   旧书被孩子们刮擦了。
3. 3. Theshoes were scuffed in the mud.
   鞋子在泥里刮擦了。