changelessness
  不變;固定的
  Change·less, a. That can not be changed; constant; as, a changeless purpose.
  -- Change*less*ness, n.
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  changelessness
       n 1: the property of remaining unchanged
       2: the quality of being unchangeable; having a marked tendency
          to remain unchanged [syn: unchangeability, unchangeableness,
           unchangingness] [ant: changeableness]