mastery

她在钢琴演奏方面的大师级造诣让所有评委都赞叹不已。

Her ___mastery in piano performance amazed all the judges.

经过多年的练习，他对钢琴的掌握令人惊叹。

After years of practice, his ___mastery of the piano is truly impressive.

经过多年的练习，他终于掌握了这门乐器的技巧。

After years of practice, he achieved complete ___mastery over the instrument.