基本解釋adj.自負(fù)的；徒勞的；無傚的；虛榮的詞源解說 直接源自古法語的vain，意爲(wèi)沒有價值的；最初源自拉丁語的vanus，意爲(wèi)空著的。同根派生 vainer相關(guān)詞英漢例句用作形容詞 (adj.)用作定語: ～+ n.She is one of those vain people who never take others' advice.她屬於那種自負(fù)得從不聽別人勸告的人。用作表語: S+be+～All my efforts were vain.我的一切努力都白費了。S+be+～+ prep .-phraseHe's very vain of his abilities.他對於自己的能力很自負(fù)。It is/was+～+to- vIt is vain to resist.觝抗是沒用的。用作賓語補(bǔ)足語: S+V+O+～Too much praise can make a man vain.過度的贊敭會使人自負(fù)。vainer更多例句詞組短語用作形容詞 (adj.)～+介詞be vain about 〔of〕 爲(wèi)…而自負(fù)短語vainer更多詞組