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TOEFL BNC: 2306 COCA: 3047
efficiency
noun [U] /ɪˈfɪʃ(ə)nsi/
singularefficiency
pluralefficiencies
  1. the ability to work well and produce good results by using the available time, money, supplies etc in the most effective way 效率;效能

    the search for lower costs and greater efficiency 对更低成本和更高效率的追求

    The inspectors were impressed by the speed and efficiency of the new system. 视察者对新系统的速度和效率很满意。

    improve/increase efficiency :

    The new technology is aimed at improving efficiency and customer service. 新技术旨在提高效率和客户服务。

     Synonyms and related words
    Usefulness and efficiency: usefulness, efficiency, effectiveness...

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