incomprehension       
noun [ U ]  formal uk/ɪnˌkɒm.prɪˈhen.ʃən/ us/ˌɪn.kɑːm.prəˈhen.ʃən/
 不理解,不懂
a person's failure or inability to understand something
  She stared at him in total incomprehension. 她全然不解地看着他。 
 a look of blank incomprehension 一副茫然不解的神情 
 Opposite: comprehension