If you have different translations on Magento,
say one store view displayed in english and a second in french,
you have to configure the languages to use in Odoo.
Set the default language in the Magento Backend (Connectors > Magento > Backend)
in the field Default Language.
Then, for each storeview (Connectors > Magento > Storeviews),
change the language of the storeview.