Translate the following English sentence to French:
"Admittedly, there is a constant demand for what is called 'the sex industry' , but we must try to prevent adults from selling themselves or their children to such networks because it is the only means of meeting their needs."
Certes, il y a une demande permanente de ce que l' on appelle "l' industrie du sexe", mais il nous faut chercher à éviter que des adultes se vendent ou vendent leurs enfants à ces réseaux parce que c' est le seul moyen de subvenir à leurs besoins.