Translate the following English sentence to French:
"I recognise that his report is quite brief, but that belies the amount of work that has had to be undertaken because the issue that we are considering is a complex one as he made clear in the course of his remarks."
Certes, ce rapport est assez bref, mais cela ne reflète pas la quantité de travail réalisé car, ainsi qu'il l'a souligné dans ses remarques, le dossier que nous examinons est complexe.