chemically
  (ad.)用化學,以化學方法
  chem·i·cal·ly /-ɪk(ə)lɪ/ 副詞
  Chem·ic·al·ly, adv. According to chemical principles; by chemical process or operation.
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  chemically
       adv 1: by the use of chemicals; "chemically fertilized" [syn: with
              chemicals]
       2: with respect to chemistry; "chemically different substances"