single frame hammer

例句：

1. 1. The single-frame hammer is used for driving nails into wood.
   单框锤用于将钉子打入木头。
2. 2.He used the single-frame hammer to saw through the wooden planks.
   他用单框锤锯断了木条。
3. 3.The single-frame hammer was a useful tool for carpenters.
   单框锤是木匠们有用的工具。