professional
Professionals, known as experts, scholars, that is, the workplace of the specialized industry, refers to the professional knowledge and skills, and to make a living career. Often, professional skills must be in accordance with scientific principles, after a long period of study and training, and have passed the examination of the certificate or license, with self-restraint behavior of professional conduct (or moral) and quantifiable professional standards. For example, "feng shui master" is not a professional, because of its "professional standards" can not be quantified. On the contrary: the general engineers in the acquisition of their engineers before the license, the training process need to have a record can be pursued; and they become engineers, not only can use their expertise to sign the approval of the plan to confirm their expertise is also sufficient in court The composition of the "expert witness" provides the court with professional judgment. Professionals are usually members of a society or association, but not all societies or associations are professionals. ...