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- He vainly tried to mark the defacing stain out. 他试图除去有损外观的污迹，但没有成功。
- 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。
- The shop expect to make a small profit this year. 这家店铺期望今年能赚点钱。
- 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。
- How in the world do you expect me to know him? 你究竟怎么会想到我认识他呢？
- She is vain and foolish, and yet people like her. 她自负而愚蠢，然而人们喜欢她。
- I can't expect help from the idler. 我不能指望那个懒惰者的帮忙。
- We tried vainly to discover what had happened. 我们设法想要弄清楚发生了什么事，但却徒劳。
- He seemed to expect to be waited on hand and foot. 他像是想要人尽心尽力伺候他。
- I didn't expect him to descend to personal abuse. 我没料到他会堕落到对我进行人身攻击的地步。
- I tried to console her, but in vain. 我试着去安慰她，但是无效。
- Don't expect that niggard to invite you to dinner. 别指望那个吝啬鬼会请你吃饭。
- She's vain and foolish, and yet people like her. 她自负又缺少智慧，然而人们喜欢她。
- He wasted his life in the vain pursuit of pleasure. 他为了追求享乐而白白虚度了一生。
- His work comes up to what we expect of him. 他的工作符合了我们的期望。
- They made vain attempts to reach the mountaintop. 他们几次徒然尝试想攀登山顶。
- All our entreaties were in vain. 我们的乞求全是枉然。
- I expect I will be back on Sunday. 我预计我会在周日回来的。
- I expect Tom to be a skilled worker. 我期望汤姆做个技术工人。
