having or showing knowledge and skill and aptitude;
"adept in handicrafts"
"an adept juggler"
"an expert job"
"a good mechanic"
"a practiced marksman"
"a proficient engineer"
"a lesser-known but no less skillful composer"
"the effect was achieved by skillful retouching"
of or relating to technique or proficiency in a practical skill;
"his technical innovation was his brushwork"
"the technical dazzle of her dancing"
proficient的用法和样例：
例句
用作形容词 (adj.)
He is proficient in English with customer. 他能熟练运用英语与客人交谈。
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。
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