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retroactive是什么意思？

retroactive

英[ˌretrəʊˈæktɪv] 美[ˌretroʊˈæktɪv]
  • 副词：retroactively;
    • 相关单词 retroactively
    例句
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    英英词典释义
    • Adjective
      1. descriptive of any event or stimulus or process that has an effect on the effects of events or stimuli or process that occurred previously
      2. affecting things past;
      "retroactive tax increase""an ex-post-facto law""retro pay"