One of the benefits of AX if you are a multi-national company is the ability to run multiple languages in the same interface. In this video I give you a quick overview of some of those capabilities.
Keep in mind this is the user interface of the application not the data you enter into the system. I touched on some of the ability to enter translations for data in this video but this is something in an implementation you want to consider what you data language standards are. I posted some notes on this topic in this post.