音標(biāo)發(fā)音英式音標(biāo) [?ju?s.f?l.n?s]美式音標(biāo) [?ju?s.f?l.n?s]國際音標(biāo) ['ju:sfulnis]英式發(fā)音 美式發(fā)音 基本解釋n.有用,有益,有效同根派生adj性質(zhì)的同根詞usable:可用的;合用的(等于useable)。useful:有用的,有益的;有幫助的。used:習(xí)慣的;二手的,使用過的。useless:無用的;無效的。useable:可用的;便于使用的(等于usable)。adv性質(zhì)的同根詞usefully:有效地,有用地。uselessly:無用地;無益地。n性質(zhì)的同根詞usage:使用;用法;慣例。use:使用;用途;發(fā)揮。using:使用;利用。user:用戶;使用者。usability:合用,可用;可用性。usableness:可用;使用方便。uselessness:無用,無效。v性質(zhì)的同根詞used:用;習(xí)慣(use的過去式)。using:使用(use的ing形式)。vi性質(zhì)的同根詞use:使用,運用。vt性質(zhì)的同根詞use:利用;耗費。usefulness相關(guān)詞英漢例句There are doubts about the usefulness of these tests.這些試驗是否有用,人們有所保留。I was persuaded of the usefulness of his new device.我相信了他的新裝置的實用性.The index adds appreciably to the usefulness of the book.索引明顯地增加了這本書的實用價值.There are doubts about the usefulness of these tests.這些試驗是否有用,人們有所保留。The attitude of the parents toward the usefulness of what is learned must colour the way children approach school.父母對學(xué)知識是否有用的態(tài)度必定會影響孩子對待學(xué)業(yè)的態(tài)度。usefulness更多例句詞組短語短語increase usefulness 增加用途usefulness index 實用性指數(shù)Usefulness Pair 有效性對governance usefulness 治理有用性mathematical usefulness 數(shù)學(xué)的應(yīng)用性usefulness更多詞組英英字典劍橋英英字典 the quality or state of being usefulusefulness劍橋字典usefulness柯林斯字典專業(yè)釋義經(jīng)濟(jì)學(xué)有用性It has been almost 40 years to conduct research on accounting earnings and its usefulness.會計盈余以及會計盈余有用性的研究已經(jīng)歷經(jīng)了近40年的風(fēng)風(fēng)雨雨。法學(xué)有效性Usefulness is the core concept of effective government, including three characteristics: validity, efficiency and effectiveness.有效性是有效政府的核心概念,具體而言包括制度的合法性、運行的高效性和結(jié)果的有效性三大特征。歷史學(xué)效用