timber folded slab roof

例句：

1. 1. Timber is a renewableresource that can be used for building andother purposes.
   木材是一种可再生资源，可用于建筑和其他目的。
2. 2. The forest was filledwith the sound of logs being splitby the saw.
   森林里传来锯木声。
3. 3. Timber is essential for the constructionindustry as it provides strong and durable materials.
   木材对于建筑业至关重要，因为它提供了坚固耐用的材料。