n. 金字塔( pyramid的名词复数 ); 金字塔形的物体（或一堆东西）; 金字塔式的组织（或系统）; 棱锥（体）
英文释义
n a polyhedron having a polygonal base and triangular sides with a common vertex
n (stock market) a series of transactions in which the speculator increases his holdings by using the rising market value of those holdings as margin for further purchases
n a massive monument with a square base and four triangular sides; begun by Cheops around 2700 BC as royal tombs in ancient Egypt
v enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts
v use or deal in (as of stock or commercial transaction) in a pyramid deal
v arrange or build up as if on the base of a pyramid
v increase rapidly and progressively step by step on a broad base