memento
/mɪˈmentəʊ/noun
(pl. -os或-oes)
- an object kept as a reminder or souvenir of a person or event纪念物, 纪念品; 引起回忆的东西：
you can purchase a memento of your visit.
你可以买个参观纪念品。
词源
late Middle English (denoting a prayer of commemoration)： from Latin, literally 'remember!'， imperative of meminisse.