adj. 徒劳的;自负的;无结果的;无用的
网络 白费; 虚荣的; 空虚的
He was vain and bombastic.
他既虚荣又浮夸。
He was self-important, vain and ignorant.
他自大、虚荣、而且无知。
I think he is shallow, vain and untrustworthy.
我认为他浅薄、虚荣、不可信。
She is perceived as vain, spoiled, and promiscuous.
她被认为是个虚荣、娇生惯养、淫乱的女人。
Isabelle was a frivolous little fool, vain and flighty.
伊莎贝尔曾是一个轻率的小傻瓜,自负而轻浮。