hacksaw frame

例句：

1. 1. The carpenter was busy assembling the hacksaw frame for the new project.
   木匠正忙着组装新项目的锯框。
2. 2. The engineer designed a sturdy frame for the bridge to withstand heavy traffic.
   工程师设计了一个坚固的框架，以承受重交通。
3. 3. The construction workers were working on the frame of the new building.
   建筑工人正在施工新大楼的框架。