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arm
ability; skill; talent; competence
(physical) strength
腕時計を忘れたので、時間がわかりません。
I forgot my wristwatch, so I don't know the time.
母の料理の腕はプロ並みだ。
My mom's cooking skill is pro-level.
腕に時計をはめています。
I'm wearing a watch on my arm.