/ˈju:sfl ||; ˈjusfəl/adj
having some practical use; helpful 有用的;实用的;有益的:
a useful tool有用的工具useful advice有益的建议 ➔usefully /-fəli ||; -fəlɪ/ adv➔usefulnessnoun [U]
come in useful to be of practical help in a certain situation 有实际帮助;派上用场:
Don't throw that box away -- it might come in useful for something.不要把那箱子扔掉─也许还能派上什么用场呢。