tenet       
noun [ C ]  formal uk/ˈten.ɪt/ us/ˈten.ɪt/
 信条;宗旨;原则
one of the principles on which a belief or theory is based
  It is a tenet of contemporary psychology that an individual's mental health is supported by having good social networks. 当代心理学的一个基本理念就是个人的心理健康有赖于良好的社交圈。 
 Synonym: precept 
Compare: dogma