资料来源 : pyDict

确实,确信,积极性

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Positivity \Pos`i*tiv"i*ty\, n.
   Positiveness. --J. Morley.

资料来源 : WordNet®

positivity
     n : a quality or state characterized by certainty or acceptance
         or affirmation [syn: {positivism}] [ant: {negativism}]