Sentence:  [T]ranslation practice during training should, at least in part, be organised in projects where each student has the chance to play various roles: that of client, of <WSD>revisor</WSD>, of terminologist of documentation assistant, of free-lancer, of in-house translator working for a translation company, etc. 
Meaning of the word marked with <WSD> tags:  A person who verifies the quality of a translated text in professional translation project management.