vain的读音是：英[ve?n]。vain的词源解说是☆ 直接源自古法语的vain，意为没有价值的；最初源自拉丁语的vanus，意为空着的。vain的意思是adj.自负的；徒劳的；无效的；虚荣的。
一、详尽释义点此查看vain的详细内容
二、双解释义
三、网络解释
1. 无用的,虚荣的：familial 家庭的 |vain 无用的,虚荣的 | vein 面纱; 掩饰
2. 徒劳的：vague 含糊的 |vain 徒劳的 | valid 有根据的
3. 徒然的：vail n小费 |vain 徒然的 |vainglorious 虚荣的
4.vain：vaginal intraepithelial neoplasia; 阴道鳞状上皮内肿瘤
四、例句
She is vain and foolish, and yet people like her.
她自负而愚蠢，然而人们喜欢她。
She is vain of her voice.
她自以为她的声音了不起。
They endeavoured to make her happy but in vain.
他们尽量使她快乐，却徒劳无功。
All his father's exhortations were in vain.
他父亲的一切劝告都无效。
We tried in vain to make him change his mind.
我们想使他改变主意，结果是白费心机。
The world had made him extravagant and vain.
世俗使他变得放荡不羁，虚荣自负。
She is so vain that she can't pass a mirror without looking into it.
她好爱虚荣,每经过一面镜子都要照一下。
五、常用短语
六、经典引文
All literature, art, and science are vain..if they do not enable you to be glad.
出自：J. RuskinIt is..vain to try to be other than we are.
出自：D. M. FrameThe vain attempts of feminist critics to prove there is a..'women's language'.
出自：New York Review of Books七、词源解说
vain的相关近义词
vain的相关反义词
vain的相关临近词
val、vail、Vaino、Vaini、Vaina、Vaine、Vainio、Vainar、vainly、Vaindl、Vainkop、Vainsot