That can lead to a lot of wasted effort.

这可能导致大量的努力白费。

I believe in the wasted years of work.

信白费掉的多年苦工。

No, I do. II didn't write " superfluid helium" on this napkin for nothing.

真的想听。特意把超流氦写在餐巾纸上可白费的。

B. His efforts made in vain.

B. 他的努力白费了。

Still Matthew said nothing and Marilla had a sense of having wasted words and breath.

马修仍然一言发，玛丽拉有种白费口舌的感觉。

I must be prepared for all my work to go to nothing.

必须做好所有工作都可能白费的准备。

You mean we climbed all the way up here for nothing?

你的意思爬上来这里一趟全白费的？

I have been amazed by your strength and your courage, and I pledge I will not let your efforts be in vain.

对你的努力和果敢表示赞叹，在这里承诺，让你的努力白费。

Learning, as I'm sure you realise is a two way process and without a significant investment from you, all our efforts will come to nothing.

学习方面，确定你明白学习双向过程，如果没有你的大力投入，所有的努力都白费的。

I mean, I had students who lost two years work because we wouldn't publish a paper that they weren't able to replicate.

的意思，有些学生因为无法重复实验结果，导致两年的工作白费，因为发表那些他无法复现的研究论文。

The Englishman objected strenuously; but as neither the blacks nor the Arab could understand a word he said his pleas were wasted.

英国人极力反对。 但由于黑人和阿拉伯人一个字也听懂， 他说他的请求白费了。

Measure the size of a ring that fits well on the person you are buying a gift for so you won't have to ruin the surprise.

如果你买戒指用来送礼，测量对方戴着刚适的戒指的尺寸。这样就让你的惊喜白费心思。

" A young man for whom two such elders had devoted themselves would indeed be culpable if he threw himself away and made their sacrifices vain" .

“一个年轻人为两位这样的长辈献身， 如果他放弃自己并让他的牺牲白费， 那确实有罪的” 。

When he met the first of his men, he commanded them to tell the rest that there was nothing left to do but to return to the forest; that all their work had been for nothing.

当他遇到他的第一个部下时，他命令他告诉其他人返回森林，没有其他事可做了；他所有的工作都白费的。

In the evening we had a dance. Cathy begged that he might b liberated then, as Isabella Linton had no partner; her entreaties were vain, and I was appointed to supply the deficiency.

晚上有个跳舞。凯蒂请求这时把他放出来，因为伊莎贝拉·林惇没有舞伴。她的请求白费的，奉命来补这个缺。

All that time researching the subject and writing was wasted. After my story was rejected, I just didn’t have the heart to stay in the office. I walked the city streets with a heavy heart. I felt tired and sad.

查资料和写东西的时间都白费了。的故事被拒之后，就没心情待在办公室了。怀着沉重的心情走在城市的大街小巷。心好累，好难过。

When pipe broke off, if the hole was too curved to lift it back out, they'd have to fill the hole up with concrete up to the 7 kilometer mark and start all over, undoing years of work each time.

当钻管断裂时， 若洞穴过于弯曲无法将其拉回，他就得将洞穴用混凝土填至7公里标记处， 从头再来，每次都意味着多年工作的白费。