deep-seated       
adjective uk/ˌdiːpˈsiː.tɪd/ us/ˌdiːpˈsiː.t̬ɪd/ (also deep-rooted, deeply rooted)
 根深蒂固的;笃信的
strongly felt or believed and very difficult to change or get rid of
  a deep-seated faith in God 笃信上帝 
 
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