useful读音英[ˈjuːsfl] ； 美[ˈjuːsfl]。
adj.有用的;有益的;实用的;有帮助的;好的;合格的。
比较级：more useful
最高级：most useful
英英释义：
adj
1、having a useful function.
utilitarian steel tables.
2、being of use or service.the girl felt motherly and useful.
a useful job.
a useful member of society.
双语例句:
1、They produced two reports, neither of which contained any useful suggestions.
他们提交了两个报告，都没有任何有用的建议。
2、Stop fussing around and find something useful to do!
别瞎忙活了，找点有用的事干！
3、Your local library will be a useful source of information.
你们当地的图书馆就是很好的资料来源。
4、It's a useful introduction to an extremely complex subject.
这是对一门极为复杂的学科的有益入门教程。
5、She has ten years' useful experience behind her.
她有十年的经验，能派上用场。
6、The article served as a useful starting point for our discussion.
这篇文章成了我们展开讨论的良好起点。
7、This technique is useful but it has its limitations.
这种技术实用，但也有局限性。
8、It was a collaboration that produced extremely useful results.
这是一次带来极其有益的成果的合作。
9、Some products can be recycled at the end of their useful life.
有些产品过了有效使用年限后是可以回收再利用的。
10、He might be useful to us.
我们也许用得上他。
11、Don't just sit watching television ─ make yourself useful!
别光坐着看电视——帮一下忙吧！
12、The newsletter is a useful channel of communication between teacher and
students.
发简讯是沟通师生的有益渠道。
13、It can be useful to write a short summary of your argument first.
先把你的论点纲要写下来可能会有帮助。
14、This course is useful for students who are in transition from one training
programme to another.
对转换培训项目的学生来说，这一课程是有帮助的。
15、The document provided a springboard for a lot of useful discussion.
这份文件引发出许多有益的讨论。