one-sidedness       
noun [ U ] uk/ˌwʌnˈsaɪ.dɪd.nəs/ us/ˌwʌnˈsaɪ.dɪd.nəs/
 片面,不公正,偏袒
a situation in which only one opinion in an argument is considered, in a way that is unfair
  One-sidedness is never easy to deal with. 片面性从来都不好对付。 
 She made a point about the one-sidedness of some television programmes. 她对一些电视节目的片面性提出了看法。 
 See: one-sided
 - More examples
 - She has been accused of political one-sidedness.
 - His approach is risky because of its one-sidedness.
 - Your one-sidedness shows in your arguments.