sawtooth roof

例句：

1. 1.The new house has a unique sawtooth roof design.
   这座新房子有一个独特的锯齿形屋顶设计。
2. 2. The old building had a traditional sawtooth roof.
   那座旧建筑有一个传统的锯齿形屋顶。
3. 3. The architect designed the roof with a sawtooth pattern for aesthetic purposes.
   建筑师设计了带有锯齿图案的屋顶，以追求美学效果。