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TOEFL BNC: 2306 COCA: 3047

efficiency

Word family 
ef·fi·cien·cy /ɪˈfɪʃənsi/ ●●○ W3 noun  
1  EFFICIENT[uncountableU] the quality of doing something well and effectively, without wasting time, money, or energy 效率；效能 OPP inefficiency
efficiency of
 the efficiency of the train service
火车服务的效率
 considerable advancements in energy efficiency
能源效率的显著提高
2  efficiencies [plural] the amounts of money, supplies etc that are saved by finding a better or cheaper way of doing something 功效
 operating efficiencies
运营功效
 COLLOCATIONS
verbs
improve/increase efficiency 提高效率
The company is taking steps to improve efficiency and reduce costs.
公司正在采取措施提高效率，降低成本。
nRecent efforts by American business to increase efficiency seem to have failed.
promote efficiency (=develop or encourage efficient ways of doing something) 提倡效率
nA competitive market helps to promote efficiency.
ADJECTIVES/NOUN + efficiency
greater/increased efficiency 更高的效率
In a search for greater efficiency, the two departments have merged.
为了寻求高效，两个部门合并了。
maximum efficiency (=the most that is possible) 最大效率
The boat's design helps it to move with maximum efficiency.
这条船的设计有助其以最大效率行驶。
fuel efficiency (=using fuel in an efficient way) 燃料效率
Better fuel efficiency can be achieved by driving more slowly.
缓慢驾驶可提高燃料效率。
energy efficiency (=using energy in an efficient way) 能源效率
Energy efficiency can play a huge role in reducing pollution.
能源效率可在减少污染方面发挥巨大作用。
nhigh efficiency (=used about machines)
The diesel engine offers high efficiency and low fuel consumption.
noperating/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 + NOUN
efficiency gains (=increases in efficiency) 效率提高
New technology introduced by the company has brought efficiency gains.
公司推行的新技术提高了效率。
efficiency savings (=money saved by being more efficient) 提高效率所节省的钱
nEfficiency savings in the industry will inevitably lead to job losses.
efficiency measures (=changes introduced to make something more efficient) 提高效率的措施
nThe new efficiency measures are designed to improve the health service.
nstandards of efficiency
Their work led to higher standards of efficiency across the industry.
Examples from the Corpus
efficiency• A case can be made for both its constitutional propriety and its administrative efficiency.• I was impressed by her speed and efficiency.• But much greater economic efficiency is not the only gain.• The results suggested a plateau of energy efficiency had been reached.• Doctors are under urgent types of demands on their time so they go for efficiency.• The benefits of cost savings, greater efficiency and synergy are being realised.• A new furnace could give you increased efficiency and more heat output.• The management seems to expect staff to be constantly achieving higher levels of efficiency and productivity.• Be that as it may, the efficiency of the Customs service was much less regarded.• Our time efficiency is eighteen days divided by twenty-three days, or 78. 3 percent.
energy efficiency• It is believed to advocate measures such as fuel substitution and energy efficiency.• These included waste reduction, paper and cardboard recycling and improving energy efficiency.• The results suggested a plateau of energy efficiency had been reached.• Conservation or energy efficiency is still the fifth fuel.• Their energy standard will be assessed by an energy audit carried out by the local authority's energy efficiency unit.• And PG&E will give away energy-saving light bulbs next month at a city-sponsored energy efficiency fair.• Energy planners have also developed ways of including the energy efficiency of each fuel source in cost-benefit models.
From Longman Business Dictionary
efficiencyef·fi·cien·cy /ɪˈfɪʃənsi/ noun [uncountableU]MANUFACTURING
1how well an industrial process, factory, or business works so that it produces as much as possible from the time, money, and resources that are put into it
A successful business constantly strives for greater efficiency.
The increase in profitability is the result of improved efficiency.
2how well and quickly a person or machine works
He was impressed by the speed and efficiency of the Japanese trains.
I had to admire his efficiency.
3cost efficiency/fuel efficiency etc when something costs as little as possible, uses as little fuel as possible etc
Auto makers will increase the fuel efficiency of their cars by 20% over the next five years.
→ economic efficiency → industrial efficiency → technical efficiency
ef·fi·cien·cy noun →COLLOCATIONS1
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