徒爾

(1)unproductive of success; "a fruitless search"; "futile years after her artistic peak"; "a sleeveless errand"; "a vain attempt"

(2)非生産的な成功

(3)having no beneficial use or incapable of functioning usefully; "a kitchen full of useless gadgets"; "she is useless in an emergency"

(4)有効利用がない、あるいは役立つ機能をすることにおいて無能である

(1)