activeness
  活躍性;積極性
  Ac·tive·ness, n. The quality of being active; nimbleness; quickness of motion; activity.
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  activeness
       n 1: the state of being active; "his sphere of activity"; "he is
            out of action" [syn: action, activity] [ant: inaction,
             inaction, inaction]
       2: the trait of being active; moving or acting rapidly and
          energetically; "the level of activity declines with age"
          [syn: activity] [ant: inactiveness]