inner          
adjective [ before noun ] uk/ˈɪn.ər/ us/ˈɪn.ɚ/
B2 里面的
inside or contained within something else
  Leading off the main hall is a series of small inner rooms. 从主客厅开始是一系列小的内室。 
humorous Few people ever managed to penetrate the director's inner sanctum (= very private room). 很少有人进过经理的私人密室。 
 B2 内心的
Inner feelings or thoughts are ones that you do not show or tell other people.
  Sarah seemed to have a profound sense of inner peace. 萨拉内心好像非常平静。 
 - More examples
 - She's an actress whose inner life has remained mysterious, despite the many interviews she has given.
 - He can't cope with difficult situations on his own - he has no inner resources.
 - He seems to be driven by some kind of inner compulsion.
 - Yoga is said to restore one's inner equilibrium.
 - The biography is an attempt to uncover the inner man.