1. 词性差异
- vanity (n.) 名词,指"虚荣心"或"无价值的事物"
- vain (adj.) 形容词,表示"徒劳的"或"自负的"
2. 核心语义对比
? vanity侧重"对自身外貌/成就的过度关注":
Her vanity made her spend hours taking selfies.
(她的虚荣心让她花数小时自拍)
? vain作"徒劳"解时强调"无效果":
They made vain attempts to save the drowning man.
(他们徒劳地尝试拯救溺水者)
? vain作"自负"解时与vanity近义但程度较轻:
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