edge of punch

例句：

1. 1.The car was parked at the edge of the road.
   汽车停在路的边缘。
2. 2.The book's edge is worn smooth from constant use.
   这本书的边缘因为经常使用而磨损得光滑了。
3. 3.The artist used a sharp edge to cut the wood.
   艺术家用锋利的刀刃来切割木头。