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。
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。
