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1. Oxford American Dictionary

   usefulness

   • IPA[ˈyo͞osfəlnəs]

   美式

   • n.
     the quality or fact of being useful

   • noun: usefulness

2. • 釋義

   n.

   名詞

   • 1. the quality or fact of being useful faults that affect the book's usefulness
3. • 更多解釋

   usefulness

   • IPA[ˈjuːsf(ʊ)lnəs]

   英式

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

   Oxford Dictionary