proficient
🇺🇸
/prəˈfɪʃnt/
🇬🇧
/prəˈfɪʃnt/
adjective
R
very good at doing something because you have learned and practiced it
She is proficient in three languages and can speak them fluently.
她精通三種語言，並且能流利地說這些語言。
translation
精通的