efficiency解释

1. 【物】效率
2. 效能，功效，实效
3. 功率
4. 提高功效的方法
5. 实力，能力
6. 【物】性能
7. 工作效率
8. 干练
9. 有效

1. the ratio of the output to the input of any system
2. skillfulness in avoiding wasted time and effort;

   "she did the work with great efficiency"
   

1.效率;效能;功效
Efficiency is the quality of being able to do a task successfully, without wasting time or energy.

e.g. There are many ways to increase agriculturalefficiency 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。
e.g. ...energyefficiency.
能效

2.（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.

1. Friction lowers the efficiency of a machine.
   摩擦减低机器的效率。

• The penalty annexed to any law is an instance, not of its efficiency, but..of its failure.

  出自：R. Whately

• He conducted his course at the University with an efficiency which shone beside the amateurish efforts of his colleagues.

  出自：F. Tuohy

• ☆ 1590年左右进入英语，直接源自拉丁语的efficere，意为效率，效果。