imprecision       
noun [ U ] uk/ˌɪm.prɪˈsɪʒ.ən/ us/ˌɪm.prɪˈsɪʒ.ən/
 不精确
the state or quality of being not accurate or exact
  This is a poorly written rule, full of contradictions and imprecision. 这是条写得很糟糕的规则,充满了矛盾和模糊之处。 
 People are accustomed to a certain amount of imprecision in language. 对于语言在某种程度上的含糊不清,大家都习以为常。 
 See: imprecise
 - More examples
 - Aircraft are sometimes directed along slower, indirect routes because of the imprecision of radar data.
 - There was a degree of imprecision in the wording in the document, which caused confusion.
 - There was some brief imprecision, but for the most part the quartet gave a riveting performance.