他的自夸充满了虚荣，总是炫耀那些微不足道的成就。

His ___vainglory was evident as he constantly bragged about minor achievements.

那座镀金的喷泉纯粹是市长虚荣心的展示，毫无实际用途。

The gilded fountain was purely a display of the mayor's ___vainglory, serving no practical purpose.