资料来源 : WordNet®

jumping-off point
     n : a beginning from which an enterprise is launched; "he uses
         other people's ideas as a springboard for his own";
         "reality provides the jumping-off point for his
         illusions"; "the point of departure of international
         comparison cannot be an institution but must be the
         function it carries out" [syn: {springboard}, {point of
         departure}]