词根是pyra,其构词法是词根pyra+词缀mid,中文意思是n. 金字塔;金字塔形的物体(或一堆东西);角锥体,棱锥体;(解剖)锥体;金字塔式组织(体系);金字塔式台球(pyramids);金字塔式控股;金字塔式骗局(pyramid scheme)
v. 把……堆成尖塔(或角锥)形;在(小投资)上获得丰厚的收益;渐增,上涨;(使)渐增,(使)上涨
The pyramid scheme was marketed through a home page on the World Wide Web.