vain (EN)

形容词

形容词 “vain”

1. 徒劳的
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   They tried in vain to push the broken car up the steep hill.
2. 自负的（特指对外表或成就过分自傲）
   She was so vain that she spent hours looking at herself in the mirror every day.
3. 空洞的（指缺乏真正价值或意义）
   His promise turned out to be vain when he failed to follow through with any action.