double-pitch roof

例句：

1. 1. The architect designed a double-pitch roof for the new office building.
   建筑师为新办公楼设计了双层坡屋顶。
2. 2.The old house had a double-pitch roof that was well-preserved.
   这座老房子有一个保存得很好的双层坡屋顶。
3. 3.The engineer recommended installing a double-pitch roof to improve energy efficiency.
   工程师建议安装一个双层坡屋顶以提高能源效率。