n.无用；无益；无价值
She finally perceived the futility of her protest. 她最终感到她的抵抗是无用的。
We see the futility of finger-pointing. 我们认为指责毫无益处。
As soon as he had felt these regrets,he realized their futility. 一有这种后悔的感觉,他马上认识到后悔是无益的。
He well knew the futility of trying to contend against witches. 他十分清楚和巫婆斗没什么好处。
Accustomed as I am to public speaking, I know the futility of it. 我虽然习惯公开演讲，但我却知道那是枉费心机的。
