Multi language directory website

IMPORTANT – Multilanguage Hi One very important issue about Translation and using 2 languages in the same time. I have used many themes related to directory for 2 years and found that using 2 languages is not like google map that the owner add the place one time and it is available to every language. by many themes is like – when add a place in English it is not available in German that this issue will exhaust the list owner. it is better that when the english user search a place – the places being available if that place is added in German.

( I think for a directory listing is better to use multi language just for menus and buttons and guids of website core and listing being available to every language )

I want to know if I am right or not? I will be very glad to write me about this important issue