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  1. Oxford American Dictionary

    permissive

    • IPA[pərˈmisiv]

    美式

    • adj.
      allowing or characterized by great or excessive freedom of behavior；allowed but not obligatory; optional
    • 釋義

    形容詞

    • 1. allowing or characterized by great or excessive freedom of behavior the permissive society of the 60s and 70s I was not a permissive parent
    • 2. allowed but not obligatory; optional the Hague Convention was permissive, not mandatory
    • 3. allowing a biological or biochemical process to occur the mutants grow well at the permissive temperature
    • ▪ allowing the infection and replication of viruses in vivo, viral expression is restricted but in vitro, cultured cells are permissive