Is there a fallback mechanism for section locale?

[jam_chan]

I've been hardcoding the translation texts in a snippet now. After that , I use Vue i18n to handle the translation work. 

This approach works quite well but the users can't change the text on their own.

If I use section locale, users can edit the text in lang editor. I can pass the locale with request.locale.iso_code and translation text with t filter in liquid.

But I can't find the equavent of fallback locale option in section locale. Is Shopify handling this fallback mechanism? Or I have a misunderstanding?