vainness

基本解释

• n.无益；徒然；自负

同根派生

英汉例句

• It is vain to attempt to root out heresy by force.
  试图用暴力消除异端邪说是徒劳的。
• I sought to persuade him, but in vain.
  我试图说服他，但无效。
• I tried to make his peace with her, but in vain.
  我试图使他与她和好，但还是白搭。
• She is vain and foolish, and yet people like her.
  她自负而愚蠢，然而人们喜欢她。
• I tried to console her, but in vain.
  我试着去安慰她，但是无效。