磨みがきがかかる

expression, godan verb (-ru)

become improved; become polished; gain refinement

Often used when someone's skill, technique, or a product's quality has been honed to a higher level, implying effort or practice behind the improvement.

• 彼かれの料りょう理りは最さい近きん磨みがきがかかってきた。

  His cooking has become more polished lately.

• 練れん習しゅうを重かさねて、彼かの女じょのピアノには磨みがきがかかった。

  Through repeated practice, her piano playing gained refinement.