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  1. impenetrable

    • IPA[imˈpenətrəb(ə)l]

    美式

    • adj.
      impossible to pass through or enter;(of matter) incapable of occupying the same space as other matter at the same time.
    • 釋義

    形容詞

    • 更多解釋
    • IPA[ɪmˈpɛnɪtrəbl]

    英式

    • adj.
      impossible to pass through or enter: a dark, impenetrable forest

    Oxford Dictionary