am·bit /ˈæmbət/
 周圍,範圍,境界,界限


 Am·bit n.  Circuit or compass.
    His great parts did not live within a small ambit.   --Milward.

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 ambit
      n : an area in which something acts or operates or has power or
          control: "the range of a supersonic jet"; "the ambit of
          municipal legislation"; "within the compass of this
          article"; "within the scope of an investigation";
          "outside the reach of the law"; "in the political orbit
          of a world power" [syn: scope, range, reach, orbit,
           compass]