n. uselessness as a consequence of having no practical result
n. 无用, 无益, 无价值
1. Trying to change his mind was a total futility.
改变他的想法完全是无用的。
2. She felt a sense of futility after working hard with no results.
她在努力工作却没有结果后感到一种无力感。
3. The futility of arguing about the past is clear to everyone.
关于过去争论的无意义对每个人来说都是显而易见的。