1. All this has played an important role in improving law enforcement effectiveness and the efficiency of our work. 
   这些对提高执法水平和工作效能，发挥了重要作用。
2. to have resource against loneliness. 
   充分发挥内在资源的效能。
3. The quality or property of being efficient. 
   效能有功效的特征或性质
4. He inquired about the efficiency of the new instrument. 
   他询问新仪器的效能。
5. The study of magnets and their effects. 
   磁学对磁体及其效能的研究

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• 1. efficiency
  缩略语全 称中文解释...efficiency效率；效能，实力...laser implosion激光向心爆炸
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• 2. effect
  effect [i'fekt] n. 效果;作用...effect [i'fekt] n.效率，作用，效能
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• 3. efficacy
  efferent nervous system [ 5efErEnt 5n*:vEs] 传出神经系统...efficacy [ efikEsi] 效能?...elimination rate constant [ i7limi5neiF(E)n reit 5konstEnt] 清除速率常数
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• 4. effectiveness
  我女兒害怕表達自己的意見。...8. effectiveness　有效，效能...n. the situation where something is working well
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