suf·fi·cien·cy /səˈfɪʃən(t)si/
  充分,充分的數量,足夠的資力
  Suf·fi·cien·cy n.
  1. The quality or state of being sufficient, or adequate to the end proposed; adequacy.
     His sufficiency is such that he bestows and possesses, his plenty being unexhausted.   --Boyle.
  2. Qualification for any purpose; ability; capacity.
     A substitute or most allowed sufficiency.   --Shak.
     I am not so confident of my own sufficiency as not willingly to admit the counsel of others.   --Eikon Basilike.
  3. Adequate substance or means; competence. “An elegant sufficiency.”
  4. Supply equal to wants; ample stock or fund.
  5. Conceit; self-confidence; self-sufficiency.
     Sufficiency is a compound of vanity and ignorance.   --Sir W. Temple.
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  sufficiency
       n 1: sufficient resources to provide comfort and meet
            obligations; "her father questioned the young suitor's
            sufficiency"
       2: an adequate quantity; a quantity that is large enough to
          achieve a purpose; "enough is as good as a feast"; "there
          is more than a sufficiency of lawyers in this country"
          [syn: enough]
       3: the quality of being sufficient for the end in view; "he
          questioned the sufficiency of human intelligence" [syn: adequacy]
          [ant: insufficiency, insufficiency]