什么是common language?

什么是common language? have language in common 还是have a language in common I have no common language and 什么是preamble language Two worlds of people,there is no common language是什么意思” common 后面是subiect,还是language,还是class? 什么是through sign language?急! 什么是technology enhanced language learning 什么是事实婚姻（Common Law Marriage） common common common there is a common language in every ( ) in the world a.county b.school c.gactory 连词成句：a ,language,a,is,different,bridge,cultures,common,between 什么是语言学中的meta-language(元语)? say ...using body language为什么是using language language