( Ezpublish CSV import script ), you can import your database from command line
Regarding the language you can tell the the script in which siteaccess you want to create the objects
For instance
php bin/php/ezcsvimport.php --siteaccess eng --class=your_class your_parent_node your_csv_file
Hint: Run a ezcsvexport.php for the class that you want to import, just to see how it formats the CSV file, then format your Excel file accordingly, and run the ezcsvimport.php script