She is vain of her beauty.

她为自己的美貌而自负。

youdao

To be vain of one's rank or place is to show that one is below it.

凡因自己的地位而觉得了不起的人，就表明他不配有这样的地位。

youdao

But surely if a man's world be the sum of his sensible perceptions, he has no reason to be vain of such a world.

但假如他的世界只是一堆感觉印象的聚集体，那么他就没有理由以这种世界自豪。

youdao

It is rather for us,the living, we here be dedicated to the great task remaining before us - that,from these honored dead we take increased devotion to that cause for which they here, gave the last full measure of devotion - that we here highly resolve these dead shall not have died in vain;

VOA: special.2011.02.07

Courage was mine, and I had mystery, Wisdom was mine, and I had mastery: To miss the march of this retreating world Into vain citadels that are not walled.

勇敢是我与生俱来的神秘，智慧是我熟稔于心的能力：,因为错过撤退的行军队列,没能和他们一起进入空虚的没有围墙的大本营。

耶鲁公开课 - 现代诗歌课程节选

And it's not just the accent of "Ain," "Quatre-vain" Or "Enfain" Instead of enfin-- it's a whole language.

而且不光是那种"俺"的口音,"把十"或者"嗨子"而不是孩子,完全是另一种语言

耶鲁公开课 - 1871年后的法国课程节选

Other royals in the Persian Gulf are also in the Islamists' cross-hairs, despite the longstanding practice by the former of generously underwriting the latter in the vain hope of buying them off.

CENTERFORSECURITYPOLICY: Obamawar

The central government in Bamako, which had been democratically elected, was overthrown in a military coup on March 22nd in the vain hope of preventing a northern takeover.

ECONOMIST: Divided Mali

We wind up with author, luminary, and longtime contributing editor Andrew Ferg-uson wandering the Web in vain search of, no, not love, but maybe just a reliable recommendation for osso buco.

FORBES: Editor's Note