uselessness as a consequence of having no practical result
futility例句
A sense of futility stole over her.
她慢慢地产生了一种没用的感觉。
Accustom 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。
futility详细解释
fu.til.i.ty n.（名词）【复数】fu.til.i.ties The quality of having no useful result; uselessness.无效，无用：没有有用结果的性质；无用Lack of importance or purpose; frivolousness.无意义或无目的；无聊A futile act.无效果的行动
