pre·oc·cu·pied /(ˌ)priˈɑkjəˌpaɪd/
 (a.)被先占的,出神的,一心一意的
 Pre·oc·cu·py v. t. [imp. & p. p. Preoccupied p. pr. & vb. n. Preoccupying ]
 1. To take possession of before another; as, to preoccupy a country not before held.
 2. To prepossess; to engage, occupy, or engross the attention of, beforehand; hence, to prejudice.
    I Think it more respectful to the reader to leave something to reflections than to preoccupy his judgment.   --Arbuthnot.
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 preoccupied
      adj 1: deeply absorbed in thought; "as distant and bemused as a
             professor listening to the prattling of his freshman
             class"; "lost in thought"; "a preoccupied frown" [syn:
              bemused, deep in thought(p), lost(p)]
      2: having or showing excessive or compulsive concern with
         something; "became more and more haunted by the stupid
         riddle"; "was absolutely obsessed with the girl"; "got no
         help from his wife who was preoccupied with the children";
         "he was taken up in worry for the old woman" [syn: haunted,
          obsessed, taken up(p)]
 preoccupy
      v 1: engage or engross the interest or attention of beforehand or
           occupy urgently or obsessively; "His work preoccupies
           him"; "The matter preoccupies her completley--she cannot
           think of anything else"
      2: occupy or take possession of beforehand or before another or
         appropriate for use in advance; "the army preoccupied the
         hills"
      [also: preoccupied]
 preoccupied
      See preoccupy