复数形式是centuries。

century：n. 世纪，百年；（板球）一百分；例：A new century was dawning.一个新的世纪开始了。 扩展资料The brooch dates back to the fourth century BC.胸针可追溯至公元前4世纪。The show runs the gamut of 20th century design.此次展览囊括了20世纪的全部设计。The family made their money in the 18th century.这个家族在18世纪创下了家业。Locke originated this theory in the 17th century.洛克于17世纪创立了这个理论