con·stan·cy /ˈkɑn(t)stən(t)si/
 堅定不移,恆久不變
 Con·stan·cy n.
 1. The state or quality of being constant or steadfast; freedom from change; stability; fixedness; immutability; as, the constancy of God in his nature and attributes.
 2. Fixedness or firmness of mind; persevering resolution; especially, firmness of mind under sufferings, steadiness in attachments, or perseverance in enterprise; stability; fidelity.
    A fellow of plain uncoined constancy.   --Shak.
    Constancy and contempt of danger.   --Prescott.
 Syn: -- Fixedness; stability; firmness; steadiness; permanence; steadfastness; resolution. See Firmness.
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 constancy
      n 1: the quality of being free from change or variation [syn: stability]
           [ant: inconstancy]
      2: the tendency for perceived objects to give rise to very
         similar perceptual experiences in spite of wide variations
         in the conditions of observation
      3: faithfulness in personal attachment (especially sexual
         fidelity)