Na'vi and other human languages

[Neyfan]

I'm curious how this would go. Sure english is one language they do know. But what if they met a human who didn't speak it or it was a second language?

Say Neytiri or another Na'vi met a human from Japan who didn't speak english at all, and needed a translator when talking to others.

I hope the sequels have something like this in it. It would expand on Na'vi meeting other humans who are really different to what they know.