con·nat·u·ral /kɑˈnæʧrəl, kə, ˈnæʧə-/
  (a.)先天的,固有的,同性質的
  Con·nat·u·ral a.
  1. Connected by nature; united in nature; inborn; inherent; natural.
     These affections are connatural to us.   --L'Estrange.
  2. Partaking of the same nature.
     And mix with our connatural dust.   --Milton.
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  connatural
       adj 1: similar in nature; "and mix with our connatural dust"- John
              Milton
       2: normally existing at birth; "mankind's connatural sense of
          the good" [syn: inborn, inbred, native]