double-faced hammer

例句：

1. 1. The double-faced hammer is a tool used for shaping metal.
   双面锤是一种用于成型金属的工具。
2. 2. He used the double-faced hammer to shape the metal into a beautiful sculpture.
   他用双面锤将金属打造成了一件美丽的雕塑。
3. 3. The double-faced hammer was essential for the construction of the bridge.
   双面锤对于桥梁的建设至关重要。