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to perform; to play; to act
あの役やくをやりたいな。
I want to play that role.
去年きょねんの舞台ぶたいでこの役やくをやりました。
I played this role in last year's show.
プロがやるとまったく違っちがって見えるみえるんだよ。
When a pro performs it, it looks completely different.