Hello @Valerie283 ,
Your listing is displayed in the language the visitor has set as default. If you made it available in "extra" language, then your text is used. If it is not available that way, the guest is offered the "translate by Google" option.
Adding 1 or 2 extra (major) languages is a good idea, but as you mentioned allready, not every section is available for translation into the extra language. So then you must rely on how Google is doing the job (if the guest clicks on it anyway).
Best regards, Emiel