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  1. fastness

    • IPA[ˈfastnəs]

    美式

    • n.
      a secure refuge, especially a place well protected by natural features;the ability of a material or dye to maintain its color without fading or washing away
    • noun: fastness, plural noun: fastnesses

    • 釋義

    名詞

    • 1. a secure refuge, especially a place well protected by natural features a remote Himalayan mountain fastness
    • 2. the ability of a material or dye to maintain its color without fading or washing away the dyes differ in their fastness to light