naturalization
  歸化,移入,移植
  Nat·u·ral·i·za·tion n.  The act or process of naturalizing, esp. of investing an alien with the rights and privileges of a native or citizen; also, the state of being naturalized.
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  naturalization
       n 1: the quality of being brought into conformity with nature
            [syn: naturalisation]
       2: the proceeding whereby a foreigner is granted citizenship
          [syn: naturalisation]
       3: the introduction of animals or plants to places where they
          flourish but are not indigenous [syn: naturalisation]
       4: changing the pronunciation of a borrowed word to agree with
          the borrowers' phonology; "the naturalization in English
          of many Italian words" [syn: naturalisation]