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to change (one's clothes)
濡れた服を早く着替えないと風邪を引くよ。
You'll catch a cold if you don't change out of wet clothes soon.
パーティーの前に正装に着替える時間がない。
There's no time to change into formal attire before the party.
帰宅したらまず楽な服に着替えるのが習慣だ。
It's my habit to change into comfortable clothes as soon as I get home.