精通某事物

例句：

1. 1. She has been studying the piano for over a decade and is considered an expert at it.
   她学习钢琴已经十多年了，被认为是这方面的专家。
2. 2. He has become an accomplished artist after years of practice and dedication.
   经过多年的练习和奉献，他已经成为一名杰出的艺术家。
3. 3. The software engineer has mastered the programming language and can solve complex problems efficiently.
   这位软件工程师已经精通了编程语言，并能高效地解决复杂的问题。