vain
英 [veɪn]
美[ven]
	    - adj. 徒劳的;自负的;无结果的;无用的
 
英英释意
- 1. characteristic of false pride; having an exaggerated sense of self-importance;
 - "a conceited fool"
 - "an attitude of self-conceited arrogance"
 - "an egotistical disregard of others"
 - "so swollen by victory that he was unfit for normal duty"
 - "growing ever more swollen-headed and arbitrary"
 - "vain about her clothes"
 
- 2. unproductive of success;
 - "a fruitless search"
 - "futile years after her artistic peak"
 - "a sleeveless errand"
 - "a vain attempt"