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单词“efficiency”的意思是：效率；功效；效能。读音为：英 [ɪˈfɪʃəns] 美 [ɪˈfɪʃəns]。例句如下：
1. The factory is run on high efficiency. 这家工厂以高效率运行。
2. This new machine is twice as efficient as the old one. 这种新机器的效率是旧机器的两倍。
3. The efficiency of the engine depends on the quality of its parts. 发动机的效率取决于零部件的质量。
4. The computer is much more efficient than it used to be. 这台电脑的效率比过去高得多。
5. The efficiency of the new machine is excellent. 新机器的效率极好。
6. The factory has been made more efficient by the use of computers. 工厂使用了电脑，生产效率提高了。
7. It takes much less energy to generate the same amount of electricity with a nuclear power station than with a coal-fired one, for example, so nuclear power is more efficient. 举例来说，使用核电站发电需要消耗较少的能量就能产生相同数量的电能，所以相对于燃煤电厂，核电是一种更加高效的能源。
8. However, technological improvement should enhance industrial efficiency as a higher rate of sales of capital stock must correspond to an enhanced factor productiveness (Brooks et al 1988; Marschak). 但是,随着资本存量的较快出售必然会产生高的生产要素生产力并加强生产率的影响提高科技应当强化这种生产效益 。
9. Other animals communicate as directly as they possibly can; each need tells it why each particular form of behavior or call might have greater or less efficiency and suggests, sometimes as strongly as material reasons do, how this course is selected or preferred to competing modes. 其他动物会尽可能直接地交流，每种动物都有其特殊的需要，解释为什么某种特定的行为或叫声在效果上可能或多或少有效，而且有时候以物质需要所不能及的方式表明了为什么选择或偏爱这种行为方式而非其他方式。
10. We need to achieve greater efficiency in our use of energy. 我们需要在能量的利用方面进一步提高效率。
因此，在进行相关工作或表述相关思想时，“efficiency”这个词在许多情况下都可能适用，包括制造业、科学实验室以及一般的商业领域等。以上即是对“efficiency”的相关解释和使用举例，希望可以帮到您！
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