Is it possible to export one document (e.g. as html) and then import the translation versions？

We're like to translate one existing document managed by ReadMe, and would like to export resource English files for translation, and then import the translated files back to the tool to make language versions. Is it possible? If so, could you please suggest how shall we proceed?

I read documents related to Localize but it's not something we'd like to integrate, and we'd like to work with our own translation vendor(s) instead.