敏びん腕わんを振ふるう

expression, godan verb (-u)

show one's competence; demonstrate one's skill

Used when someone displays their ability or talent in a practical situation, often in a professional or leadership context.

• 新しん社しゃ長ちょうは敏びん腕わんを振ふるって会かい社しゃを立たて直なおした。

  The new president demonstrated his skill and turned the company around.

• 彼かの女じょはプロジェクトで敏びん腕わんを振ふるい、見み事ごとに成せい功こうさせた。

  She showed her competence in the project and made it a great success.