commemoration
noun [ C or U ] uk/kəˌmem.əˈreɪ.ʃən/ us/kəˌmem.əˈreɪ.ʃən/
纪念;纪念活动
something that is done to remember officially and give respect to a great person or event
A set of stamps has been commissioned in commemoration of Independence Day. 为纪念独立日特别制作了一套邮票。
Thousands of veterans will take part in a commemoration of the battle. 数千名老兵将参加战争纪念活动。