音標(biāo)發(fā)音英式音標(biāo) [??n.??ve?.l??]美式音標(biāo) [??n.??ve?.l??]國(guó)際音標(biāo) [,?n?'veili?]英式發(fā)音 美式發(fā)音 基本解釋adj. 無(wú)傚的;徒勞的;無(wú)益的;無(wú)用的同根派生 unavailing相關(guān)詞英漢例句Efforts to reach the people named in the report proved unavailing.聯(lián)系過(guò)報(bào)告中所提到的那些人,但都徒勞無(wú)功。Their efforts were unavailing.他們的努力都付諸東流。Hurstwood heard the details of the weary and unavailing search that evening.那天晚上,赫斯渥聽(tīng)到了這次勞而無(wú)獲的尋找的詳細(xì)情況.Their efforts were unavailing.他們的努力都付諸東流。Efforts to reach the people named in the report proved unavailing.聯(lián)系過(guò)報(bào)告中所提到的那些人,但都徒勞無(wú)功。unavailing更多例句英英字典劍橋英英字典 When an attempt to do something is unavailing, it is unsuccessful or has no positive effect.柯林斯英英字典 An unavailing attempt to do something does not succeed. unavailing劍橋字典unavailing柯林斯字典專業(yè)釋義琯理學(xué)無(wú)傚的