adv.职业上；专业地；内行地；非业余地
He has been playing basketball professionally for five years. 他当职业篮球运动员已经5年了。
The product has been marketed very professionally. 这项产品的推销一直很讲究专业技巧。
The burglar alarm should be professionally installed. 防盗警报应当由专业人员安装。
