他选了一个大块石头，在一个需要磨利的石刮子边沿上敲打起来。
He chose one large stone and began to hit one of the scrapers hard on the edge that needed sharpening.
请勿使用硬刷子，或磨沙粉，以免刮损本产品。
Cleaning powder and brush may scratch the surface of the product.
磨钻、骨凿、刮勺和拉钩；
The invention also comprises an abrasion drill, a bone chisel, a spatula and a drag hook.
磨钻、骨凿、刮勺和拉钩；
The invention also comprises an abrasion drill, a bone chisel, a spatula and a drag hook.
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