FAQs About the word usefulness

用处

the quality of being of practical useThe quality or state of being useful; utility; serviceableness; advantage.

利用,使用,实用工具,优势,援助,利益,帮助,行驶里程,服务,可用性

无用,无价值,不适用,不当性

usefully => 有用的, useful => 有用, used-car lot => 二手车市场, used-car => 二手车, used to => 曾经,