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学必求其心得,业必贵于专精
· vain
· adj. [veɪn] ( vainer; vainest ) ·
· 双解释义
· 自负的; 爱慕虚荣的 thinking too highly of one's appearance, abilities, etc.; conceited
· 徒劳的,无用的,无效的 useless or futile · 词汇搭配
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~+介词
be vain about〔of〕 为…而自负
· 常用短语
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in vain
1.白费地,徒劳无益地uselessly; without a successful result We tried in vain to make him change his mind。我们试图使他改变主意,结果是白费心机.
2.无效果的,无用的fruitless or useless
It was in vain that we tried to find his mother。我们百般设法找他的母亲,但毫无结果.
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· 句型例句
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学必求其心得,业必贵于专精
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用作定语 ▲~+n。
She is one of those vain people who never take others’ advice.她属于那种自负得从不听别人劝告的人。
I don't like a vain woman.我讨厌爱慕虚荣的女人。
He made a vain attempt to reach the drowning child.他试图接近那个快淹死的小孩,但没有成功。 用作表语 ▲S+be+~
All my efforts were vain.我的一切努力都白费了. ▲S+be+~+prep。—phrase
He's very vain of his abilities.他对于自己的能力很自负. ▲It is/was+~+to-v
It is vain to resist。抵抗是没用的。 用作宾语补足语 ▲S+V+O+~
Too much praise can make a man vain。过度的赞扬会使人自负。
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· 补充资料
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学必求其心得,业必贵于专精
[同义词] useless, void
[反义词] beneficial, effective, useful
[词源]<拉丁语vanus(空,无用的,无效的)
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