Noun:

1. a fraudulent business practice involving some form of pyramid scheme e.g., the chain of distribution is artificially expanded by an excessive number of distributors selling to other distributors at progressively higher wholesale prices until retail prices are unnecessarily inflated

pyramidn.金字塔；棱锥体；[证券]金字塔式交易法v.急速增加；以金字塔的模型构建pyramid roofing四坡维体屋面pyramid antenna角锥形天线pyramidal light棱锥天窗pyramidal error尖塔差pyramid of life生命锥体, 生命金字塔pyramid-typed“金字塔”型pyramid holding金字塔式控制股权pyramid derrick金字塔式井架pyramidal cells[医] 锥体细胞pyramid matching金字塔匹配

1. The pyramids are (a) testimony to the Ancient Egyptians' engineering skills.
   金字塔是古埃及人工程技术精湛的丰碑。
2. A pyramid of stones marked the spot.
   那地点用一堆堆成金字塔形状的石头作了标记。
3. Egypt is famous for its grand pyramids.
   埃及以巨大的金字塔闻名。
4. There are many mysterious stories about the Egyptian pyramids.
   关于埃及金字塔有许多神秘的故事。