The Single_Language category contains sites offering translation services (or primarily translation services) in one language combination. Sites offering more than one language combination are listed in Multiple_Language (see also that category's description for submission guidelines).
If your site is already listed elsewhere in the Translation_Services category, and you feel that it should be listed in the Single_Language category, please contact the relevant editors.
Please also take note that any site can only be listed *once* in the entire Translation/ category.