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单词 cis-
释义 cis-
  1. a prefix occurring in loanwords from Latin meaning "on the near side of" (cisalpine); on this model, used in the formation of compound words (cisatlantic).
  2.  Chem.   a specialization of this denoting a geometric isomer having a pair of identical atoms or groups attached on the same side of two atoms linked by a double bond. Cf. trans- (def. 2).
 [ < L; akin to HERE]
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