adj.熟练的；精通的
n.能手
After reading this book, you will be proficient in writing. 读完这本书，你会精于写作。
My friend is proficient in three languages. 我的朋友精通三种语言。
She was very proficient in music. 她非常精通音乐。
用作名词 (n.)He doesn't look like a proficient in golf. 他看起来不像是个打高尔夫球的专家。
If I had ever learnt, I should have been a great proficient. 如果我有机会学的话,我应该已经是个专家了。
adv.熟练地
