他用娴熟的技术演奏着乐曲。

He plays the music with ___skillful technique.

他用娴熟的技巧修复了这台复杂的机器。

He fixed the complicated machine with ___skillful techniques.

这位钢琴家以熟练的指法演奏了这首复杂的曲子。

The pianist played the complex piece with ___skillful fingering.