vain
adj. 虚荣的，自负的；徒劳的
例句
He was vain and bombastic.
他既虚荣又浮夸。
《柯林斯英汉双解大词典》
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。
