commemoration

名词 commemoration:

1. a ceremony to honor the memory of someone or something
   同义词：memorialization, memorialisation
2. a recognition of meritorious service
   同义词：memorial, remembrance

1. People are lining up to buy commemoration stamps.
   人们正在排队购买纪念邮票。

com.mem.o.ra.tion

n.（名词）
The act of honoring the memory of or serving as a memorial to someone or something.
纪念仪式：纪念某物、某人或作为纪念物提供给某人、某事的行为
Something that honors or preserves the memory of another.
纪念：对另一事进行纪念或保存记忆的某事