He stopped at the door, waiting in vain for her to acknowledge his presence.
他停在门口，徒然地等着她跟自己打招呼。
Erewhile I sought it, and sued in vain.
不久前，我寻找它，却徒劳无功。
Our efforts were not in vain.; we didn't waste our energy.
我们的力气没有白费。
During the hours spent waiting in vain to see a bone doctor, I decided to take another track and try acupuncture.
在白白等待看骨科医生的几个小时里，我决定换一种方式，去尝试针灸。
Have you been taking my name in vain again?
你又在滥用我的名义吧？
She tried in vain to point out to him the unfairness of his actions.
她试图向他指出他的做法不公正，但无济于事。
She searched in vain for her passport.
她翻找自己的护照，但没找着。
He wants the world to know his son did not die in vain.
他想让世人知道他儿子的死不是毫无意义的。
A seemingly endless line of trucks waits in vain to load up.
看上去没有尽头的一排卡车徒劳地等着装货。
Mike told me yesterday that he had been looking in vain for a job in the art gallery.
迈克昨天告诉我，他一直在找美术馆的工作，但没有找到。
我们的所有努力都付诸东流了。
They tried in vain to persuade her to go.
他们极力劝说她去，但枉费了一番口舌。
They sought in vain for somewhere to shelter.
他们怎么也找不到一个藏身的地方。
Parents campaigned in vain for her reinstatement.
家长们为她的复职而奔波，但是毫无结果。
The plane circled twice, trying in vain to line up with the runway.
飞机盘旋了两圈，试图对准跑道降落却没成功。
Their blood was not shed in vain.
他们的血没有白流。
"No," said he, "it is all in vain."
“不。”他说，“一切只是徒劳。”
但这一切都是徒劳的。
这一切都是徒劳的。
He prayed, he wept, he sorrowed, but all in vain.
他祈祷，他哭泣，他悲伤，但都是徒劳的。
Heidi struggled constantly against her sorrow, but in vain.
海蒂不断地与悲伤作斗争，但白费力气。
His efforts to raise money for his program were in vain because no one showed any intention to take a cent out of their pockets.
他为自己的项目募集资金的努力白费了，因为没有人表现出要从口袋掏钱的意思。
Drug companies have spent billions of dollars searching for therapies to reverse or significantly slow Alzheimer's disease, but in vain.
医药公司已经花费数十亿美元以寻找能逆转或显著减缓阿尔茨海默病的治疗方法，但毫无结果。
Jeff searched in vain for Rosie in the next four days.
接下来的四天里，杰夫一直在寻找罗西，但没有找到。
I spent all afternoon trying in vain to put this bookcase together.
我花了一下午的时间试图把这个书架组装起来，但没有成功。
There were once a man and a woman who had long in vain wished for a child.
从前，有一对男女，他们一直想要个孩子，但一直没有实现。
我们没有白忙。
I read his article again and again, trying hard to understand what he was driving at but in vain.
我把他的文章读了一遍又一遍，但对他的意图仍百思不解。
All efforts of mediation by a third party were in vain at all.
第三方所作的从中调解的一切努力均告失败。
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