be vain of

基本解释

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。
Years ago, when I was a boy, you met me, flattered me, and taught me to be vain of my good looks.
多年前，当我还是个孩子的时候，你遇到了我，奉承我，并且教我为自己的姿容感到自豪。
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。

Still, those at the Fed are nothing if not hubristic, and they'll surely try in vain to be ahead of collapsing markets despite their inability to predict them in the past.
FORBES: Magazine Article
The people of Pennsylvania Avenue can be vain, greedy, downright nasty as well.
NPR: Can Next President Deliver on Promises of 'Change'?
Iraq is the frontline in this struggle and history will prove that the sacrifices of Iraqis, for freedom, will not be in vain.
NPR: The Politics of U.S. Troop Levels in Iraq