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.
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.
应用推荐