pyramidal

例句：

1. 1. The pyramids in Egypt are a marvel of ancient engineering.
   埃及的金字塔是古代工程的奇迹。
2. 2. The cube is a pyramidal shape with six faces.
   立方体是一种多角形，有六个面。
3. 3.The roof of the building is shaped like a pyramid.
   这栋建筑的屋顶呈金字塔形。