Hi Y,
This is not something which would fit into the Confluence product, which is an enterprise wiki for writing and editing documents not automatically translating them. However, you should be able to find other software that can do this for you.
I know Google and AltaVista have free translation technologies, and probably sell betters ones commercially. That might be a good start.
There's also the potential to integrate these technologies as a Confluence plugin. If you know a particular technology that would be good to integrate, you could suggest a plugin idea on our plugin wishlist.
I'll close this issue as "Won't fix", because we won't be adding any translation functionality into the Confluence product itself.
Regards,
Matt
Y -
You can do this with Enterprise Translations Hub for Atlassian Confluence.
It exactly fits your use case and more.