ad·dic·tion /əˈdɪkʃən, æ-/
  沈溺,上癮
  ad·dic·tion /əˈdɪkʃən/ 名詞
  Ad·dic·tion n.  The state of being addicted; devotion; inclination. “His addiction was to courses vain.”
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  addiction
       n 1: being abnormally tolerant to and dependent on something that
            is psychologically or physically habit-forming
            (especially alcohol or narcotic drugs) [syn: dependence,
             dependency, habituation]
       2: an abnormally strong craving
       3: (Roman law) a formal award by a court sentence of a thing or
          person to another (as of a debtor to his creditor); a
          surrender to a master; "under Roman law addiction was the
          justification for slavery"