hedger
  植樹籬的人;兩面下注的人
  Hedg·er n. One who makes or mends hedges; also, one who hedges, as, in betting.
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  hedger
       n 1: a respondent who avoids giving a clear direct answer [syn: equivocator]
       2: someone who counterbalances one transaction (as a bet)
          against another in order to protect against loss
       3: a gardener who takes care of and trims hedges