preexistent
  (a.)先在的;前世的
  Pre·ëx·ist·ent a. Existing previously; preceding existence; as, a preëxistent state.
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  pre-existent
       adj : existing previously or before something; "variations on
             pre-existent musical themes" [syn: preexistent, preexisting,
              pre-existing]
  preexistent
       adj : existing previously or before something; "variations on
             pre-existent musical themes" [syn: pre-existent, preexisting,
              pre-existing]