So I started looking online, also in vain.

所以我开始在网上查找，也是徒劳无功。

youdao

But he and others have not done so in vain.

不过他和其他人的行动不是徒劳的。

youdao

It would be a shame if Mohamed Bouazizi and the others who have given their lives in the hope of a better life had done so in vain.

如果穆哈默德·布阿齐齐以及其他那些为了美好生活而献身的人的努力都付之东流，那该是多么遗憾的事儿啊。

youdao

Those who lodged complaints did so in vain.

ECONOMIST: New Labour rules

So he has put a tough general in charge of the 10, 000 or so federal troops stationed in the republic, muzzled its voice in the federal parliament, and tried (so far in vain) to silence its annoyingly lively press.

ECONOMIST: A beleaguered Balkan outpost of sanity

Israeli and Palestinian emissaries have been in Washington meeting American officials separately to look for a way forward so far in vain.

ECONOMIST: Israel and diplomacy