房屋之平顶

例句：

1. 1. The house has a flat roof that can be easily cleaned.
   这所房子有一个可以很容易清洁的平顶。
2. 2. Flat roofs are popular in modern architecture because they save space.
   平顶在现代建筑中很受欢迎，因为它们节省空间。
3. 3. The flat roof of the house is made from asphalt shingles.
   这所房子的平顶是由沥青瓦制成的。