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to amuse oneself; to make merry
仲間と将棋に興じた午後だった。
It was an afternoon spent enjoying shogi with friends.
子供たちが雪合戦に興じている姿が微笑ましい。
It's heartwarming to see the children having fun with a snowball fight.
休日に釣りに興ずるのが楽しみだ。
I look forward to enjoying fishing on my days off.