self-righteously       
adverb uk/ˌselfˈraɪ.tʃəs.li/ us/ˌselfˈraɪ.tʃəs.li/
 自以为是地
in a self-righteous way (= believing that your ideas and behaviour are morally better than other people's) 
  We read these books and shake our heads self-righteously, certain that if we had been there, it would never have happened.  我们读了这些书,自以为是地摇摇头,确信假如我们当时在那里的话,书中所说的那种事情就绝对不会发生。 
 The people who self-righteously claim to know the most about the environment here are not from here. 那些自以为是地声称最了解这里环境的人并不来自这里。 
 See: self-righteous
 - More examples
 - Sometimes my mind self-righteously judges the people we meet.
 - "I told you he couldn't cook," said Terry self-righteously.
 - The paper self-righteously took up the story, forcing the other newspapers to follow suit.