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commemoration; celebration; remembrance; memory; honoring the memory of
memento; souvenir; keepsake
学校の創立五十周年を記念して式典が行われた。
A ceremony was held to commemorate the school's 50th anniversary.
結婚十周年の記念に旅行した。
We traveled to commemorate our 10th anniversary.
この公園は平和を記念して作られたものだ。
This park was built to commemorate peace.