efficiency
noun [ U ] uk/ɪˈfɪʃ.ən.si/ us/ɪˈfɪʃ.ən.si/
B2 效率；效能；功效
the good use of time and energy in a way that does not waste any
What is so impressive about their society is the efficiency of the public services. 他们的社会给人留下最深刻印象的是其高效率的公共服务。
energy efficiency 能源使用效率
physics specialized（机器的）功率
the difference between the amount of energy that is put into a machine in the form of fuel, effort, etc. and the amount that comes out of it in the form of movement
- More examples
- She got through her work with speed and efficiency.
- Streamlining cars increases their fuel efficiency.
- Ships from eight navies will be taking part in an exercise in the Pacific to improve their efficiency in combat.
- He's a stickler for efficiency.
- Sweden has shown the way forward on energy efficiency.