pyramid

• 指底面为多边形、侧面为三角形且交于一个公共顶点的多面体；在金融中指利用不断上涨的市场价值作为保证金进行进一步购买的投机性交易系列。

A noun referring to a polyhedron with a polygonal base and triangular sides meeting at a common vertex, or in finance, a series of speculative transactions using rising market value as margin for further purchases.

1. Geometric shapeB1formal

   A polyhedron with a polygonal base and triangular faces that meet at a common point called the apex.

   棱锥

   • The students built a model of a pyramid for their geometry class.
   • A square pyramid has a square base and four triangular sides.
   • The volume of a pyramid is calculated using its base area and height.

2. Ancient Egyptian monumentA2formal

   A massive stone structure with a square base and triangular sides, built as a tomb for pharaohs in ancient Egypt.

   金字塔

   • The Great Pyramid of Giza is one of the Seven Wonders of the Ancient World.
   • Tourists from all over the world visit the pyramids in Egypt.
   • The pyramids were built thousands of years ago as royal tombs.

3. Financial schemeC1formalbusiness

   A series of transactions in which a speculator increases holdings by using the rising market value of those holdings as margin for further purchases.

   金字塔骗局

   • The investor built a pyramid of stocks to maximize his returns.
   • Pyramid trading can be risky if the market suddenly drops.
   • He used the profits from his initial investment to create a pyramid of additional holdings.

4. Hierarchical structureB2formal

   A system or organization with a broad base and narrowing levels of authority or importance.

   金字塔结构

   • The company's management structure is shaped like a pyramid.
   • In a pyramid scheme, early investors profit from later ones.
   • The social pyramid of ancient Egypt had the pharaoh at the top.

   同义词hierarchyladderpecking orderranking

• 动词，指将某物排列或建造为金字塔形，或逐步增加、累积某事物。

A verb meaning to arrange or build something in the shape of a pyramid, or to increase or accumulate gradually.

1. Increase holdings using paper profitsC1formalamericanbusiness

   To enlarge one's holdings on an exchange during a continued rise by using paper profits as margin to buy additional amounts.

   金字塔式加仓

   • The investor pyramided his stock holdings during the bull market.
   • She pyramided her profits by reinvesting in the same rising stock.
   • He pyramided his position in the tech sector, buying more shares as the price climbed.

2. Deal in pyramid transactionsC1formalamericanbusiness

   To use or deal in stock or commercial transactions in a pyramid deal structure.

   金字塔式交易

   • The company was accused of pyramiding its financial transactions.
   • They pyramided their investments through a complex series of trades.
   • The broker pyramided the client's account without proper authorization.

3. Arrange in a pyramid shapeB2formal

   To arrange or build up something as if on the base of a pyramid, with a broad base tapering to a point.

   使成金字塔形

   • The children pyramided the blocks into a tall tower.
   • They pyramided the display with the largest items at the bottom.
   • The chef pyramided the fruit on the platter for a dramatic effect.

   同义词accumulatebuild upheappilestack

4. Increase rapidly step by stepC1formal

   To increase rapidly and progressively step by step on a broad base, like a pyramid structure.

   呈金字塔式迅速增长

   • The costs pyramided as the project expanded.
   • Her debts pyramided after she lost her job.
   • The effects of the policy pyramided over time, leading to significant changes.

   同义词compoundescalatemultiplymushroomproliferatesnowball