1. Reading is a useful occupation to us.
   阅读对我们是一种有益的消遣。
2. The computer is useful in processing data.
   电子计算机在处理资料方面很有用。
3. The computer is ever such a useful tool.
   计算机是一种非常有用的工具。
4. He's a useful member of the team.
   他是该队的一名强手。
5. This chisel is useful for getting into awkward spaces.
   这凿子在要伸入到犄角儿里时十分有用。
6. Each of the components is useful in its degree.
   每一个元件都各有程度不同的用处。
7. He dished up a lot of useful facts and figures.
   他拿出了许多有用的事实和数据。
8. Side cutters are useful for cutting electrical flex to length.
   切边钳适用于剪切电线。
9. The minister has piloted several useful bills through Parliament.
   这位部长设法使几项有用的法案得以在国会通过。
10. A light pointer is often useful with a slide projector.
    光指示器经常与幻灯片放映机一起使用。
11. He made many useful social contacts while he was in Canada.
    他在加拿大期间， 结识了许多有势力的社会人士。
12. Chemicals in the body break our food down into useful substances.
    人体中的化学元素把食物分解成有用的物质。
13. There is a useful bibliography at the end of each chapter.
    在每一章后附有一份有用的参考书目。
14. Her lectures are very useful, but they’re dry as dust.
    她讲的课很有用，可是却乏味得要死。
15. In general, the book was quite useful for the non-techy crowd.
    总的来说，这本书对那些电脑技术不太在行的人来说相当有用。
16. A little money can be a useful buffer in time of need.
    在急需时, 很少一点钱就能解燃眉之急。
17. Adam raised the issue of multimedia applications and much useful discussion ensued.
    亚当提出了多媒体应用的问题，从而引发了许多有益的讨论。
18. An unerring faculty for detecting hypocrisy is one of her most useful attributes.
    能无误地看出伪善的能力是她身上最有用的特征之一。
19. Citation analysis is a special and useful research method in Bibliometrics and Scientometrics.
    引文分析是传统文献计量学和科学计量学的一种独特研究方法。
20. The proposed troop reductions were a useful bargaining counter in the disarmament talks.
    裁减兵员的提议是这次裁军谈判中一个有用的讨价还价的筹码。

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