adj. 专业的,专业性的,职业的
n. 专业人士
professional可以用作形容词
professional可表示“有意的,故意的”,通常指在体育比赛中故意犯规。professional表示“职业的,专业的”“有意的,故意的”时,没有比较级和最高级。
professional用作形容词的用法例句
Don't wear those clothes to work; try to look more professional!别穿这些衣服去工作，要穿得象个专业人员的样子。
That doctor has been accused of professional misconduct.那位医生被指控违反医德。
She was always punctual and professional.她总是准时并具有专业能力。
1、He seemed fond of her in a strictly professional way.
他似乎只是出于职业缘故而喜欢她。
2、I'm a novice at these things, Lieutenant. You're the professional.
中尉，做这些事情我是新手，你是行家。
3、Support for monogamy and marriage was strongest among the professional classes.
专业人士阶层最支持一夫一妻制。