usefulness

noun

1. 有用；实用；可用性
   the fact of being useful or possible to use
   1. There are doubts about the usefulness of these tests.
      这些试验是否有用，人们有所保留。
   2. The building has outlived its usefulness.
      这座楼房已超过使用年限了。

1. ADJ-GRADED 有用的；可用的；有助益的
   If something is useful, you can use it to do something or to help you in some way.
   1. The slow cooker is very useful for people who go out all day...
      慢炖锅对于整天都不在家的人来说很有用。
   2. Hypnotherapy can be useful in helping you give up smoking...
      催眠疗法可能有助于你戒烟。
   3. The police gained a great deal of useful information about the organization.
      警方收集到了大量关于该组织的有用信息。
2. PHRASE 有用；派得上用场
   If an object or skill comes in useful, it can help you achieve something in a particular situation.
   1. The accommodation is some distance from the clubhouse, so a hire car comes in useful.
      住处离会所有一段距离，所以租一辆车会很有用。

1. The attitude of the parents toward the usefulness of what is learned must colour the way children approach school.
   父母对学知识是否有用的态度必定会影响孩子对待学业的态度。
2. The UN is an organisation which has long since outlived its usefulness
   联合国是一个早已形同虚设的机构。
3. Man early learned the usefulness of weapons.
   人类很早以前就知道了武器的用处。
4. It is of the greatest usefulness.
   它是极有用的。
5. After its usefulness in other domains was realized, it was redesigned as a general scientific data visualizer.
   当人们认识到它在其他领域中的效用之后，它就作为一种通用科学数据可视化工具重新进行了设计。
6. The usefulness of this is that it also includes information about the current values of the KPIs.
   这样做的用处在于，它还包括了有关当前KPI值的信息。
7. Sometimes case studies and experience reports are produced, but do not consistently assess the usefulness of key techniques.
   有时候，生成了案例研究和经验报告，但不一贯地评估关键技术的有效性。
8. But it may have a number of tests that have outlived their usefulness.
   但是可能有许多测试的生命长过其有效时期。
9. Second, they provide views and consulting to address ease of use and usefulness of the data.
   其次，他们提供见解和咨询，以解决数据易用性和实用性。
10. These mistakes sap XML of its power and usefulness.
    这些错误损害了XML的能力和有效性。
11. Remember to balance the relevance and usefulness of the article with your desire to stay in touch.
    记住要根据你对保持联系的愿望来权衡文章的相关性和实用性。
12. Many advertisements exaggerate the usefulness of the products.
    很多广告都夸大了产品的效用。
13. Develop architectural descriptions iteratively, constantly reviewing their correctness and usefulness.
    迭代地描述架构，经常检查并确保它的正确性及有效性。
14. But he was doubtful about the usefulness of the research.
    但是他对该研究的用处表示怀疑。
15. But the research casts doubt on the usefulness of such products.
    但是，一项最新研究却对这些食品的有效性提出了置疑。
16. The machine had outlived its usefulness.
    这机器已无用了。
17. You are past your usefulness to me.
    你已经对我没有任何价值了。
18. Many people think the system has outlived its usefulness.
    许多人认为该系统已经不再有用了。
19. Eventually we decided that the system had outlived its usefulness.
    最后我们决定这个系统已不再有使用价值了。
20. One exception, he feels, has been a recent breakthrough in the usefulness of web conferencing.
    他认为，一个例外是网络会议的用途最近实现了突破。
21. The value of network supervision is to protect the Internet's usefulness for people.
    网络监管的价值在于保护互联网对人的有益性。
22. An application example demonstrates the usefulness and effectiveness of this technique.
    本文最后给出了一个实测，以说明方法的应用和有效性。
23. The ② integrity control: Accuracy, usefulness and compatibility of assurance data;
    ②完整性控制：保证数据的正确性、有效性和相容性；
24. Some people think this system of education has outlived its usefulness.
    一些人认为这一教育制度已经不再有效用了。
25. Experimental results of aberration measurements of two lenses are given to verify the usefulness of the setup.
    给出两个聚焦镜的像差测量结果，验证了该装置的有效性。
26. The usefulness of this system for arteriovenous malformation ( AVM) surgery was evaluated prospectively.
    此系统在动静脉畸形（AVM）手术中的作用已获得前瞻性评价。
27. In fact, men are outliving their usefulness.
    事实上，人已经过时了，无用了。
28. The high quality of accounting standards is the premise for improving the usefulness of accounting information.
    高质量的会计准则是促使会计信息有用性提高的前提保证。
29. But the usefulness of the analysis was often questioned by economists.
    但这种分析的实用性常常遭到经济学家的质疑。
30. We are experimenting with the language and our group is very positive about the usefulness of Ruby.
    我们尝试了这种语言，我们的团队非常欣赏Ruby的实用性。

noun

1. the quality of being of practical use

   Synonym:    utility