ga·lac·tic /gəˈlæktɪk/
  (a.)銀河的,乳汁的,極大的
  Ga·lac·tic a.
  1. Of or pertaining to milk; got from milk; as, galactic acid.
  2. Of or pertaining to the galaxy or Milky Way.
  Galactic circle Astron., the great circle of the heavens, to which the course of the galaxy most nearly conforms. --Herschel.
  Galactic poles, the poles of the galactic circle.
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  galactic
       adj 1: of or relating to a galaxy (especially our galaxy the Milky
              Way); "the galactic plane"
       2: inconceivably large [syn: astronomic, astronomical]