Definition: Given an English sentence, convert it into the french language.
Input: However , these units were themselves slowly retired , and it was expected the final units would have been withdrawn from service before the end of 2004 .
Output:
Toutefois , ces unités étaient elles-mêmes à la retraite et on s' attendait à ce que les unités finales soient retirées du service avant la fin de 2004 .