ab·sent·ly /ˈæbsṇtlɪ/ 形容詞
  心不在焉地, 茫然地
  Ab·sent·ly adv. In an absent or abstracted manner.
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  absently
       adv : in an absent-minded or preoccupied manner; "he read the
             letter absently" [syn: abstractedly, inattentively,
              absentmindedly]