a common language used by speakers of different languages
同义词：lingua franca, koine
interlanguage详细解释
in.ter.lan.guage n.（名词）The type of language produced by nonnative speakers in the process of learning a second language or foreign language.人工辅助语言：一种由非本族语使用者在学习第二语言或外语的过程中形成的语言A lingua franca.通用语
