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。
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.
在法官眼里，这种安全证书徒劳无功。
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。
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。
但免费的非法替代物泛滥，很可能使之徒劳无功。
The wide availability of free illegal alternatives may well crimp these efforts.
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.
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.
这些年来，Hood一直努力实现DNA测序自动化，但一直徒劳无功。
Hood had been laboring to automate DNA sequencing for years, to no avail.
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.
阿富汗战略回顾过于高调并耗时过长，寻求中东和平的努力变得徒劳无功。
The Afghan strategy review has been too public and taken too long; the Middle East peace hunt has become a wild goose chase.
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.
商家已开始通过发送赠品和提升服务来提高顾客忠诚度，不过往往徒劳无功。
Stores hoping to increase loyalty are starting to promote giveaways and improve service, but often in vain.
但是恐慌的核心就是非理性，任何试图以逻辑来对抗恐慌的努力都将徒劳无功。
But panic is at its core irrational. Trying to counter panic with logic can be a futile exercise.
记录下该时刻发生的背景细节——曾经我就尝试过重温一个笔记结果无功而返。
Record Contextual Details About the Moment - There have been times when I've attempted to review a note to no avail.
在看到妥协无功，两派又都回归各自阵营寻找根源，不去理睬对方阵营的声音。
With their compromise tool useless, both sides have retreated to their roots, ignoring the other camp's ideas.
此后，这三个州一直在协商与诉讼之间变来变去，两种方式均已证实徒劳无功。
Since then the states have veered between negotiations and lawsuits; both have proved fruitless.
但是，乐天市场开拓日本市场时的无功而返，却不会在别的市场上同样碌碌无为。
But the inefficiencies that Rakuten exploited in the Japanese market do not exist to the same extent elsewhere.
但是，乐天市场开拓日本市场时的无功而返，却不会在别的市场上同样碌碌无为。
But the inefficiencies that Rakuten exploited in the Japanese market do not exist to the same extent elsewhere.
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