Squawk Ident, I defer to your hearing the original.
For what its worth, here is the English-language text of what he said on the France24 site.
According to Lieutenant-Colonel Xavier Mulot, chief investigator for AF flight 447, "We're expecting a lot from this study because, thanks to the way the debris was broken and traces of burns, it'll eventually allow us to understand what happened."
Most speakers with English as their mother tongue would say that he described the recovered wreckage as having traces of burns.