There is two possible solution for this. You can decide which one fits you better:

1. Use different accounts for each of the languages. In this case everything is duplicated.

2. You can use the same account and:

import the items: 

   -a- use the automatic product catalog import - so you may will have the product attributes randomly in different languages

   -b- use our catalog import so you can import all the languages:

display the recommendations "manually" on your site by our JS library callback functions to display product attributes in the appropriate language:

I hope this information was helpful for you. If you have more questions, please don't hesitate to contact us.