quincentenary
quincentenary[ˌkwɪnsɛnˈtiːn(ə)ri, -ˈtɛn-](pl. -ies)- the five-hundredth anniversary of a significant event
(重大事件的)五百周年纪念
adjective- of or relating to such an anniversary
五百周年纪念的
语源- late 19th cent.: from Latin quinque 'five' + centenary
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