translate English to French: Quebecor's largest subsidiary, Quebecor World Inc., which accounts for the bulk of Quebecor's revenues, is involved in Canadian and world-wide commercial printing activities.
La plus importante filiale de Quebecor, Quebecor World Inc., qui représente le gros des recettes de Quebecor, mène des activités d'impression commerciale au Canada et à l'étranger.