谙练

例句：

1. 1. She has been learning the language for years and is now quite fluent.
   她多年来一直在学习这门语言，现在已经相当流利了。
2. 2. The expert had to familiarize himself with the new regulations before starting work.
   这位专家在开始工作之前必须熟悉新的规章制度。
3. 3. After years of practice, she became an expert in her field.
   经过多年的练习，她成为了她领域的专家。