uselessness
n. 无用；无价值；无结果
近义词：nothing，vanity，ineptness，futility，ineffectiveness，incompetence，inefficiency，impracticality，inadequacy，worthlessness，unusefulness，inutility，usefulness，
英英释义
Noun
- the quality of having no practical use
例句
用作名词(n.)
- Well, uselessness can be turned into usefulness.可以化无用为有用。
- It is a scathing tract on the uselessness of war.这是一本对战争无用性进行严厉批评的小册子。