diglossia

详细解释:【医】 双舌[畸形], 舌裂[畸形]

详细解释：

dig.los.si.a

n.（名词）
A sociolinguistic situation in which complementary social functions are distributed between two different varieties of a language, a prestigious, formal, or high variety and a common, colloquial, or low variety, as in Italian, German, or Scottish English.
双语制：一种社会语言学地位，其中补充的社会功能分配在同一种语言的两种异体一种为有声誉的，正式的或变化多的异体，另一种为普通的、口语化的或变化少的异体，如意大利语、德语或苏格兰英语

来源：
From Greek diglôssos [speaking two languages]
源自 希腊语 diglôssos [能说两种语言]
di- [two] * see di-
di- [二] *参见 di-
glôssa [tongue, language]
glôssa [舌头，语言]