- 役に立たない
- of no utility: 役に立たない、無益{むえき}な
- utility: utility n. 《文語》 実用, 効果; 公益事業.【動詞+】It has ceased to have any practical utility.それは実用性を全く失ってしまったincrease the utility of……の効用を増すNow that computers are so cheap, typewriters are losing most of their uti
- article of utility: 実用品{じつようひん}◆通例複数形の articles で