The issue which may arise about the concept of localization leads us to question the notion of translation. The communication at stake within the dynamics of bilingual and dual-nationality groups (e.g., Franco-German groups) becomes a kind of oral translation which, within said group, will be based on linguistic and intercultural schisms, but also of a whole psycho-relational experience. The notion of mediation makes it possible through its all-encompassing nature and its polysemy to approach this particular field of study in its entirety. On a higher level, the unexplored field of study examined here hitherto leads to an evasion of the ultimate epistemological reflection. On a lower level, several intercultural communication scenarios will be presented.