圆滑的／精明的人等（尤指善于牟取私利的人）
someone who is skilled at dealing with people and getting what he or she wants from a situation
He has shown himself to be a canny operator in wage negotiations. 他在薪酬谈判过程中表现得精明老练。
He proved himself to be a smooth operator in his eight years with the company.
He had a well-deserved reputation as one of the industry's smoothest operators.
She's evidently a clever operator, having surrounded herself with the right sort of people.
She's regarded as one of the smartest operators in the business.
She's a smart operator and don't you forget it.
See also: operator (PERSON OR BUSINESS)