spring·board /ˈsprɪŋˌbord, ˌbɔrd/
 跳板


 Spring·board n. An elastic board, secured at the ends, or at one end, often by elastic supports, used in performing feats of agility or in exercising.

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 springboard
      n 1: a flexible board for jumping upward
      2: 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: jumping-off point, {point
         of departure]