记忆方法
双解例句
小知识
Efficiency is avoiding a waste of time, effort, or resources. Many people have begun to use compact fluorescent light bulbs because of their greater energy efficiency.
Nowadays, efficiency often refers to energy efficiency, the effort to get more energy from existing resources: making cars that can go farther with less fuel, or appliances that do the same work with less electricity. But this noun isn't restricted to an environmental context. Efficiency can also simply be a measurement of what goes into a thing versus what comes out of it. A process with high efficiency requires only a little work to produce big results.
实用短语
常用短语
单词用法
这组词都有“效果”的意思，其区别是:
validity有效性，合法性
influence强调“潜移默化”的影响
efficiency效率
production efficiency 生产效率
work efficiency 工作效率；劳动效率；加工效率
economic efficiency 经济效率
词根词缀
后缀: -ency
表名词,ence的变体,”性质,状态”
n.
complacency 自满,自得com全部+plac平静+ency性质,状态→身心平静→自满
deficiency 缺乏,不足;缺点,缺陷de去掉+fici做+ency性质,状态→做得不够→缺点,缺陷
efficiency 效率;功效ef出+fici做+ency性质,状态→能做出事来→效率
latency 潜伏期lat=last持续+ency性质,状态→n.潜伏期
persistency 固执,持续persist坚持+ency性质,状态→n.固执,持续
solvency 溶解力,还债能力solv溶解+ency性质,状态→n.溶解力,还债能力
sufficiency 充分,充分的数量,足够的资力suffice充足,足够+ency性质,状态→sufficiency
emergency 紧急情况,突然事件,非常时刻emerge浮现+ency性质,状态→emergency→突然出现的事情