tri·plic·i·ty /trɪˈplɪsəti, traɪ-/
  三倍,三個一幅,三位一體
  Tri·plic·i·ty n.  The quality or state of being triple, or threefold; trebleness.
     In their trinal triplicities on high.   --Spenser.
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  triplicity
       n 1: (astrology) one of four groups of the zodiac where each
            group consists of three signs separated from each other
            by 120 degrees [syn: trigon]
       2: the property of being triple