[N-UNCOUNT 不可数名词]效率；效能；功效Efficiency is the quality of being able to do a task successfully, without wasting time or energy.
There are many ways to increase agricultural efficiency in the poorer areas of the world.
有很多方法能够提高世界贫困地区的农业效率。
...energy efficiency.
能效
2
[N-UNCOUNT 不可数名词]（物理学、工程学中的）效率，功率 In physics and engineering, efficiency is the ratio between the amount of energy a machine needs to make it work, and the amount it produces.
[also N in pl]
[TECHNICAL 术语]
Oxford
ef·fi·ciency/ɪˈfɪʃnsi; NAmEɪˈfɪʃnsi/noun1[uncountable ]the quality of doing sth well with no waste of time or money 效率；效能；功效◆improvements in efficiency at the factory工厂效率的提高◆I was impressed by the efficiency with which she handled the crisis.她应变效率之高给我留下了深刻的印象。2efficiencies[plural ]ways of wasting less time and money or of saving time or money 提高功效的方法◆We are looking at our business to see where savings and efficiencies can be made.我们正在研究我们的经营情况，看是否有可以节约和提高功效的地方。3[uncountable ]( technical 术语) the relationship between the amount of energy that goes into a machine or an engine, and the amount that it produces （能源的）效率，功率4[countable ]=
1[uncountable] the quality of doing something well and effectively, without wasting time, money, or energyOPP inefficiencyefficiency of the efficiency of the train service considerable advancements in energy efficiency2efficiencies [plural] the amounts of money, supplies etc that are saved by finding a better or cheaper way of doing something: operating efficienciesCOLLOCATIONSverbsimprove/increase efficiency· The company is taking steps to improve efficiency and reduce costs.· Recent efforts by American business to increase efficiency seem to have failed.promote efficiency (=develop or encourage efficient ways of doing something)· A competitive market helps to promote efficiency.ADJECTIVES/NOUN + efficiencygreater/increased efficiency· In a search for greater efficiency, the two departments have merged.maximum efficiency (=the most that is possible)· The boat's design helps it to move with maximum efficiency.fuel efficiency (=using fuel in an efficient way)· Better fuel efficiency can be achieved by driving more slowly.energy efficiency (=using energy in an efficient way)· Energy efficiency can play a huge role in reducing pollution.high efficiency (=used about machines)· The diesel engine offers high efficiency and low fuel consumption.operating/operational efficiency (=the efficiency with which a machine or system works)· The computer can process this information quickly, without any loss of operating efficiency.efficiency + NOUNefficiency gains (=increases in efficiency)· New technology introduced by the company has brought efficiency gains.efficiency savings (=money saved by being more efficient)· Efficiency savings in the industry will inevitably lead to job losses.efficiency measures (=changes introduced to make something more efficient)· The new efficiency measures are designed to improve the health service.standards of efficiency· Their work led to higher standards of efficiency across the industry.
WDF
efficiency
[ɪˈfɪʃnsi]
CET4CET6TEM4考研TOEFL
n3066
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Spoken:
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效率(99%)，功率(1%)
n.效率；效能；功效
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