meretricious       
adjective  formal uk/ˌmer.ɪˈtrɪʃ.əs/ us/ˌmer.əˈtrɪʃ.əs/
 华而不实的,金玉其外的
seeming attractive but really false or of little value
  He claims that a lot of journalism is meretricious and superficial. 他称许多新闻报道虚夸肤浅。 
 Synonyms: flash gimcrack