我们辛辛苦苦跟踪他，却无功而返。
他宣称自己无罪，却徒劳无功；他没有更好的回答就被解雇了。
In vain he declared his innocence; he was dismissed with no better answer.
和西西弗斯一样，巨石费力地向上滚动，结果又滚了下来，徒劳无功。
As with Sisyphus, the boulder was painstakingly rolled upwards only to tumble back down again in an absurd exercise of futility.
不久前，我寻找它，却徒劳无功。
他们企图恢复英镑币值，但劳而无功。
在企图实现一个变革中我们徒劳无功。
All our efforts availed us little in trying to effect a change.
然而所有的努力似乎都劳而无功。
我尝试了多次，都徒劳无功。
在法官眼里，这种安全证书徒劳无功。
此举有着英雄气概，但或许徒劳无功。
无功得名是常事，无过失名也是常事。
所以我开始在网上查找，也是徒劳无功。
徒劳无功：罗马不感兴趣，清教徒也是。
盖茨是有理由认为乔布斯会劳而无功的。
欧洲努力对该地区施加影响，但图劳无功。
The Europeans have tried vainly to exert some influence over the region.
在华盛顿无功而返，或许在巴黎能取得成果。
她再次拿出手机接收服务信号，还是徒劳无功。
She again tries in vain to get her cell phone to pick up service.
通常，对有技巧的经理的搜寻最终都是徒劳无功。
Often, the search for a skilful manager turns out to be a wild-golden-goose chase.
与这样的人体岩石对抗，瑞典的骑兵攻击波最终只能无功而返。
Against this human rock the waves of Swedish horsemen thundered in vain.
但你要做好心理准备，因为这通常是漫长而且徒劳无功的过程。
Be forewarned, however, that this can be a slow and often futile process.
一般来说，他们已然尝试过所有经过验证的疗法，却徒劳无功。
因此，想从他的著述中找出一个最终答案，必然是徒劳无功的。
Hence it is futile to look for synthesis or a final resolution in his writings.
不可思议的是，这根本不是徒劳无功。最终的结果简直令人惊叹。
But the weird thing is that it's not futile at all. The end results are, quite simply, breathtaking.
因此，毫无疑问，浪费你的努力和行动只会毫无结果、徒劳无功。
There is therefore no question of wasting your efforts on initiatives and actions that turn out sterile or futile.
从马路上一路走进四合院，我总会产生一种深切的徒劳无功的感觉。
Coming through the high driveway into the quadrangle a sense of abysmal futility always came over me.
打破这个循环是主要的问题，解决方法也是多种多样，但是都无功而返。
Breaking the cycle is the problem here and the solutions offered are varied with nothing totally foolproof.
惠普在平板电脑市场无功而返，而苹果的iPad却仍然卖得异常火爆。
HP failed to create a hit tablet; Apple's iPad is still selling like crazy.
想找到带有“免耕”标志食物的消费者看来要无功而返了，至少目前是这样。
Alas, shoppers look in vain for "no till" labels on their food-at least so far.
他在《富裕生活》中写道：“它使我们避免了无功的努力或者是错位调整。”
It enabled us to "avoid awkward effort or unwelcome dislocation of life," he wrote in The Affluent Society.
他在《富裕生活》中写道：“它使我们避免了无功的努力或者是错位调整。”
It enabled us to "avoid awkward effort or unwelcome dislocation of life," he wrote in The Affluent Society.
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