There is no need to translate content, just need to translate the few words on the actual interface so that russians understand how to post, create an account,etc... Afaik golos will not translate english post to russians anyway, they just want russians to post russian content and they can do that just fine on steemit.com
The only needed feature is an option to select prefered language so that russians can only see the russians content if they wish to.