The simple, easy and rough materials serve as the big baseofpyramid, while the complex, difficult and subtle materials serve as the top of pyramid.
简单、容易和粗略就是金字塔庞大的基底，繁杂、困难和精细就是金字塔的顶部。
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In the baseofpyramid model, this paper designed a new method for the genegration of multi-resolution texture with OOP. Some related problems are also discussed in this paper.
The Food Guide Pyramid was a graphic which emphasizes that a healthy diet is built on a baseof grains, vegetables and fruits, followed by ever-decreasing amounts of dairy.