Don't worry. The same site in many different languages is perfectly valid. Check the site in my profile and you can see it done in 20 langages. We rank #1-5 for all important keywords and have been doing so for years, in a competitive environment.
I just want to echo what rencke said; once you translate the copy - no matter how little it may be - you absolutely fine. The engines will not see it as dupe content and will reward you with traffic in the language you translate to :)
Yep you should be fine for sure. I have a site with 12 language versions and no problems for years on dupe filters for that. Was just checking stats actually and that's why I wanted to post here. Just made a big sale in Japanese ;)