NAabbr.无名麻醉剂(=Narcotics Anonymous)abbr.全国科学院会员（=National Academician）abbr.全国科学院(=National Academy)abbr.北美（=North America）abbr.不适用的（=Not Applicable）Naoda直田(姓,日本)

1. The core symptom of narcissistic personality disorder is ego centrism.
   自恋型人格障碍的核心症状是自我中心。