我尝试了多次，都徒劳无功。
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.
为改变而改变是愚蠢而徒劳无功的。
此举有着英雄气概，但或许徒劳无功。
暴风雨使他们的努力徒劳无功。
对程序进行修改是徒劳无功的。
我设法与王先生联络，但是徒劳无功。
当然，我的努力和忧虑也是徒劳无功。
你这样做是徒劳无功的，有谁会在乎呢？
小偷试图打开这扇锁着的门，但徒劳无功。
他们想查出那陌生人的姓名，却徒劳无功。
格林：我刚刚去过图书馆，但是徒劳无功。
杰夫试着清理被打翻的酒，可是却徒劳无功。
Jeff tried to clean up the spilled wine, but his efforts were in vain.
干井中抽水，徒劳无功。
我们努力想让这只麋鹿舒服一些却徒劳无功。
The group tried to make the elk more comfortable but to no avail.
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.
他们想查出那陌生人的姓名职业，但徒劳无功。
They vainly tried to find out the stranger's name and occupation.
撒网捕风徒劳无功。
对于一些人来说，对幸福的争取甚至是徒劳无功的。
To some, even trying to achieve it is an exercise in futility.
虽然他们常常徒劳无功，但是寻找石油的行动仍在继续。
Quite often they find nothing, but the search for oil always goes on.
一个诗人要想寻找他心里诗歌的母亲的话，是徒劳无功的。
In vain shall a poet seek the mother of the songs of his heart.
在仲夏，它可以热和渔业等，所以，就好像它是徒劳无功。
In mid-summer, it can be hot and the fishing so-so, just like it is anywhere.
“稀释血液”也很流行，徒劳无功地，有时候还是致命的。
"Thinning the Blood," was also very popular, fruitlessly useless, and sometimes deadly.
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.
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.
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