back saw blade

例句：

1. 1. The carpenter used a back saw to cut the wood for the shelves.
   木匠用一把锯背刀来切木板做书架。
2. 2.The back saw blade was sharp enough to cut through even the thickest of woods.
   那把锯背刀锋利到能砍断最厚的木头。
3. 3. He carefully removed the back saw blade from the saw before he began his work.
   他在开始工作前小心地将锯背刀从锯子上拆下来。