efficiency /ɪˈfɪʃənsi/ noun plural efficiencies
plural efficiencies
Learner's definition of EFFICIENCY
1
: the ability to do something or produce something without wasting materials, time, or energy : the quality or degree of being efficient效率;效能;效力 [noncount]
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Because of her efficiency, we got all the work done in a few hours.由于她的效率高,我们几个小时就干完了全部工作。
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The factory was operating at peak efficiency.工厂开足马力运转。
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a car with greater fuel efficiency [=a car that uses fuel more efficiently]油效更高的车
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A furnace with 80 percent fuel efficiency wastes 20 percent of its fuel.燃料效率达到80%的锅炉浪费了20%的燃料。
[plural]
(technical)