The supporting evidence was strong on its own: African-American residents without water had made repeated requests over a period of almost 50 years to remedy the inequity, to no avail.

支持证据本身就很强有力：没有水的非裔美国居民在近50年里曾经多次要求纠正不公平待遇，但是没有结果。

youdao

This I tried —though putting pictures straight is no habit of mine—but it was of no avail.

我尝试了这种方法——尽管把画挂正并不是我的习惯——但毫无效果。

youdao

The advice we got was of no avail.

我们得到的这个建议根本没用。

youdao

"After the dissuasion by means of whistle-blowing, shouting and hand-flag guiding was of no avail, the Chinese naval vessels fired two red signal shells into the sky as a warning, and the signal shells burned out and extinguished in the air, " Xinhua quoted the official as saying.

BBC: China 'fired flares' at Vietnam boat in South China Sea

If Zimmerman was the initial aggressor, he cannot avail himself of the protection of the "stand your ground" law.

CNN: Let a jury decide on Trayvon Martin case

It was in Terminal 1 where I decided to avail myself of a pedicure.

BBC: Changi: The airport of your dreams