cen·tral /ˈsɛntrəl/
  (a.)中心的,中央的;主要的,最重要的
  cen·tral /ˈsɛntrəl/ 形容詞
  中央的,中心的,中樞的
  central
  中央
  Cen·tral a.  Relating to the center; situated in or near the center or middle; containing the center; of or pertaining to the parts near the center; equidistant or equally accessible from certain points.
  Central force Math., a force acting upon a body towards or away from a fixed or movable center.
  Center sun Astron., a name given to a hypothetical body about which Mädler supposed the solar system together with all the stars in the Milky Way, to be revolving. A point near Alcyone in the Pleiades was supposed to possess characteristics of the position of such a body.
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  Cen·tral Cen·tra·le n.  Anat. The central, or one of the central, bones of the carpus or or tarsus. In the tarsus of man it is represented by the navicular.
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  central
       adj 1: serving as an essential component; "a cardinal rule"; "the
              central cause of the problem"; "an example that was
              fundamental to the argument"; "computers are
              fundamental to modern industrial structure" [syn: cardinal,
               fundamental, key, primal]
       2: in or near a center or constituting a center; the inner
          area; "a central position"; "central heating and air
          conditioning" [ant: peripheral]
       3: used in the description of a place that in the middle of
          another place; "the people of Central and Northern
          Europe"; "country in central Africa"
       4: centrally located and easy to reach; "the central city has
          good bus service"; "the shop has a central location"
       n : a workplace that serves as a telecommunications facility
           where lines from telephones can be connected together to
           permit communication [syn: telephone exchange, exchange]