bicentenary
noun [ C ] UK uk/ˌbaɪ.senˈtiː.nər.i/ us/ˌbaɪ.senˈten.ɚ.i/ (US bicentennial, uk/ˌbaɪ.senˈten.i.əl/ /-sən-/)
200周年;200周年纪念日
the day or year that is 200 years after a particular event, especially an important one
A statue was erected to mark the bicentenary of the composer's birth. 人们建了一尊塑像以纪念这位作曲家诞辰200周年。
bicentenary celebrations 200周年庆祝活动