我们辛辛苦苦跟踪他，却无功而返。
不久前，我寻找它，却徒劳无功。
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.
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。
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.
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.
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.
《别对我撒谎》的收视率表现可谓无功无过，但就目前来说第三季就只有13集了。
Lie to Me was doing fairly well in the ratings but for now it will sit on 13 episodes.
昨天，四艘救援船和一架直升飞机徒劳无功地搜寻斯金纳，今天搜寻工作再度展开。
Four rescue boats and a helicopter searched in vain for Skinner yesterday and resumed the hunt today.
女性占人口50%是事实，但是因此而试图采取接纳所有女性的市场策略徒劳无功。
To attempt a marketing strategy to encompass all women based on the fact that they make up 50% of the population is a futile exercise.
专家们找到了一些可能影响减肥计划，甚至能令减肥努力徒劳无功的因素，它们是。
Experts identified factors that may affect, or even sabotage, people's many unsung efforts at losing weight. Some of these factors are.
专家们找到了一些可能影响减肥计划，甚至能令减肥努力徒劳无功的因素，它们是。
Experts identified factors that may affect, or even sabotage, people's many unsung efforts at losing weight. Some of these factors are.
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