bolt chisel

例句：

1. 1.The carpenter used a bolt to secure the door.
   木匠用螺栓把门固定住了。
2. 2. He chiseled away at the stone until it was smooth.
   他用力凿平了石头直到它变得光滑。
3. 3. The carpenter used a bolt and chisel to build the shelves.
   木匠用螺栓和凿子搭建了架子。