Translate the following English sentence to French:
"We are going to abstain for reasons which I imagine are very different from Mr Pirker' s reasons for voting against it, but we are going to abstain in order to maintain the position which Parliament has already expressed."
Nous nous abstiendrons pour des raisons qui sont, je suppose, bien différentes de celles qui poussent M. Pirker à s'opposer à cette modification, mais nous le ferons pour respecter la position déjà exprimée par le Parlement.