bow saw frame

例句：

1. 1. The engineer used a bow saw to cut the wood for the new building.
   工程师使用弓锯为新建筑切割木材。
2. 2.The carpenter was using a bow saw to make the wooden planks fit together perfectly.
   木匠正在使用弓锯使木块完美地拼接在一起。
3. 3.The construction crew had to use a bow saw to remove the old boards before they could install the new ones.
   施工队伍不得不使用弓锯来移除旧木板，以便安装新的木板。