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  1. usefulness

    • IPA[ˈyo͞osfəlnəs]

    美式

    • n.
      the quality or fact of being useful
    • noun: usefulness

    • 釋義
    • n.
      名詞
    • 1. the quality or fact of being useful:

      faults that affect the book's usefulness

    • 更多解釋
    • IPA[ˈjuːsf(ʊ)lnəs]

    英式

    • n.
      the quality or fact of being useful:
    • faults that affect the book's usefulness

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  2. 知識+