non-native speaker       
noun [ C ] uk/ˌnɒn.neɪ.tɪv ˈspiː.kər/ us/ˌnɑːn.neɪ.t̬ɪv ˈspiː.kɚ/
 非母语者
someone who has learned a particular language as a child or adult rather than as a baby 
  dictionaries for non-native speakers of English 为英语非母语者使用的字典