英语语法分析

At this moment of success I found only an unreasoning sense of futility.

在这个成功的时刻，我只能感觉到一种不理智的徒劳感。

《柯林斯英汉双解大词典》

He well knew the futility of trying to contend against witches, so he gave up discouraged.

他深知与女巫斗争是徒劳无益的，所以他灰心丧气地放弃了。

As with Sisyphus, the boulder was painstakingly rolled upwards only to tumble back down again in an absurd exercise of futility.

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。