gap frame C

例句：

1. 1. The engineer used a gap frame to reinforce the wall.
   工程师使用一个间隙框架来加固墙壁。
2. 2. The gap frame was crucial in supporting the roof during construction.
   间隙框架在施工期间支撑屋顶至关重要。
3. 3. The gap frame helped to distribute the weight evenly across the floor.
   间隙框架帮助均匀地将重量分布在地板上。