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- 这是有用的书,更难得的是不贵。
It is a useful book and, what is more, not an expensive one.
- 有点依靠的东西总是有用的。
It's always useful to have something to fall back on.
- 向他解释理由是没有用的。
It is no use explaining the reason to him.
- 这会非常有用的。
It'll be most useful.
- 她是个应该结交的有用的人。
She is a useful person to know.
- 跟他们讨论终止合同是没有用的。
It's no use to discuss the termination of contract with them.
- 约翰经常设法和对他有用的人结交。
John always tries to cultivate people who are useful to him.
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