bilingual       
adjective uk/baɪˈlɪŋ.ɡwəl/ us/baɪˈlɪŋ.ɡwəl/
C1 能用两种语言的;两种语言的
(of a person) able to use two languages equally well, or (of a thing) using or involving two languages
  She works as a bilingual secretary for an insurance company. 她在一家保险公司担任双语秘书。 
 a bilingual dictionary 双语词典 
 Compare: monolingualmultilingualtrilingual