creativity n.  [U]  apprec the ability to produce new and original ideas and things;  imagination and inventiveness〖褒〗创造力；创造性

essencen.  [(of)] the central or most important quality of a thing 

                  [常与of连用]本质，实质

uncreative a.  not creative 缺乏创造性的

imagination  n.  [C] sth. that sb. imagines, not sth. that  really exists or happens 

                           想象；空想

unconditioned  a.  not limited by any conditions 无条件的，无限制的