diglossia
noun /daɪˈɡlɒsiə/
/daɪˈɡlɑːsiə/
[uncountable] (linguistics- a situation in which two languages or two forms of a language are used under different conditions in a community
双语现象,双重语体(两种语言或一种语言的两种变体并存于一个语言集体中) 词源1950s: from Greek diglōssos ‘bilingual’, on the pattern of French diglossie.