de·duce /dɪˈdus, di; ||ˈdjus/
  (v.)推論,推斷,推理,演繹
  De·duce v. t. [imp. & p. p. Deduced p. pr. & vb. n. Deducing.]
  1. To lead forth. [A Latinism]
     He should hither deduce a colony.   --Selden.
  2. To take away; to deduct; to subtract; as, to deduce a part from the whole. [Obs.]
  3. To derive or draw; to derive by logical process; to obtain or arrive at as the result of reasoning; to gather, as a truth or opinion, from what precedes or from premises; to infer; -- with from or out of.
  O goddess, say, shall I deduce my rhymes
  From the dire nation in its early times?   --Pope.
     Reasoning is nothing but the faculty of deducing unknown truths from principles already known.   --Locke.
     See what regard will be paid to the pedigree which deduces your descent from kings and conquerors.   --Sir W. Scott.
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  deduce
       v 1: reason by deduction; establish by deduction [syn: infer, deduct,
             derive]
       2: conclude by reasoning; in logic [syn: infer]