proficient [prəˈfɪʃnt]

以下由轻松背单词网站提供

adj.熟练的，精通的；n.能手，专家

skilled and experienced

She is proficient at swimming. 她精通游泳。
I think I'm quite proficient in both written and spoken English. 我认为我在英语读写方面相当熟练。