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- A vain idea! 妄想！
- The secretary was a vain and pompous man. 秘书是一个虚荣而自负的人。
- These embraces were a vain pretence. 这类拥护完全是故作姿态。
- This was a vain but an important imagining. 这是一个徒然的但是很美妙的幻想。
- She's just a vain, foolish woman. 她不过是个愚蠢自负的女人。
- We made a vain attempt to make him change his mind. 我们想让他改变主意,但都是白费工夫。
- I made a vain attempt to enlighten you. 算我白启发你了。
- She made a vain attempt to stop him. 她试图阻止他,但是徒然。
- The person is a vain statue.wear taciturnity calm. 他是一座孤傲的雕像，缄默不语。。。
- He made a vain attempt to reach the drowning child. 他试图接近那个快淹死的小孩, 但没有成功。
- We will not be shipwrecked on a vain reality. 我们不会在徒劳的现实里遇难。
- A vain, self-important, silly, or aggressively stupid person. 愚蠢的人自负的，妄自尊大的，愚蠢的或过分自信的笨蛋
- My sister is bigoted. It's a vain if you want him to change mind. 我妹妹很固执，你要她改变心意根本就是白费力气。
- Why do the heathen rage, and the people imagine a vain thing? 外邦为什么争闹,万民为什么谋算虚妄的事。
- He was a vain fellow, and not conscious of this nor any defect. 他是个自高自大的家伙，但他自己没有意识到这点，也没有感觉到自己有何缺点。
- She made a vain attempt to persuade him to lend her the money. 她想说服他借钱给她,结果没有成功。
- The teacher made a vain attempt to get the children to obey. 老师想叫孩子守纪律，但是徒劳无功。
- He made a vain attempt to reach the summit of the mountain. 他试图登上那座山的顶峰，但未能成功。
- Putt means merely a vain attempt to do the same thing. 高尔夫球的手段仅仅是一个妄图做同样的事情。
- He is a vain person, and is fond of revealing his wealth to others. 他是个虚荣的人，爱露白。
