vain
- 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"