[] the ability to do sth well with no waste of time or money效率◆improvements in efficiency at the factory工厂效率的提高◆I was impressed by the speed and efficiency with which my order was processed.他们处理我的订单的速度和效率给我留下了深刻的印象。◆The increase in profits was mainly due to efficiency gains.利润的增加主要归因于效率的提升。⨁to achieve / boost / improve / increase / maximize efficiency实现／促进／改进／提高／最大限度地提高效率⨁efficiency gains / savings效率提升／增效节约⨁an efficiency drive / programme效率导向／方案efficiencies [] ways of wasting less time and money or of saving time and money提高效率的方法◆We are looking at our business to see where efficiencies can be made.我们正在研究我们的业务，看看是否有可以提高效率的地方。 () [] the relationship between the amount of energy that goes into a machine or an engine, and the amount that it produces效率；功率◆The generator is running at only 40% efficiency.这台发动机的运行效率只有 40%。cost-efficiency technical efficiency x-efficiency