Translation:In the synagogue they speak only in Yiddish.
The sentence should have an alternate translation for בבית הכנסת that includes "at" rather than "in."
Actually I always wanted to ask, חרדים, do they use Hebrew in everyday life? If not then which language do they speak? I'm pretty sure I read somewhere they regard Hebrew as a holy tongue and prefer not to speak it. On the other hand I'd bet I have heard some of them speak Hebrew.
Most of them speak Hebrew, but there are still some groups within the Haredi society that speak Yiddish.
As far as I know they only regard Biblical Hebrew as a Holy language, which may be why they prefer to speak Yiddish over Modern Hebrew (Ivrit), as it is mostly derived from Biblical Hebrew but has been "secularized".
Ivrit- that is, is derived from Biblical Hebrew. Not Yiddish as I may have made it sound.
Duolingo Yiddish is still in the pipeline! Please release it soon!!!!!!!!
I don't think it is any longer, duo hasn't provided the support for it .
Yiddish is the the language of Ashkenazi Jews. The same way Ladino is the language of Sephardi Jews. There are many different Jewish languages that are a combination of the local language/s and Hebrew... Judeo-arabic, there was one in Greece, and Italy, etc.
Yiddish has two main versions that are mostly accents/pronunciation depending on where one lived - Litvak (Lithuania, Germany, Poland) and Galitzianer (from Galicia, part of then Austria, now Poland and Ukraine). There are other versions, but these are the main ones. https://www.worldatlas.com/articles/what-are-the-jewish-languages.html
You can hear a song with the two versions of Yiddish: https://youtu.be/PTVVJ2uxPcI