commemoration
/kəˌmeməˈreɪʃən/noun
mass noun
1- remembrance, typically expressed in a ceremony（尤指通过仪式表达的）纪念：
local martyrs received public commemoration.
本地的烈士们受到了公众的纪念。
1.1
- count noun a ceremony or celebration in which a person or event is remembered纪念仪式; 庆典。
短语
in commemoration
- as a reminder, especially a ritual or official one作为纪念（物）（尤指以仪式或官方方式）：
the window was ordered by the duchess in commemoration of her son.
公爵夫人定购了这扇窗来纪念她儿子。
词源
late Middle English: from Latin commemoratio（n-）, from the verb commemorare 'bring to remembrance' （see COMMEMORATE）.