Efficiency can be operational.Logical formLearned from3 044 sentences. Efficiency can be increased.Logical formLearned from2 834 sentences. Efficiency can be high.Logical formLearned from2 800 sentences. Efficiency can be improved.Logical formLearned from2 005 sentences. (Efficiency indicators) may pertain-to a country.Logical formLearned from1 853 sentences. Efficiencies can be operational.Logical formLearned from1 372 sentences. Efficiency may pertain-to persons.Logical formLearned from792 sentences. Efficiency may pertain-to a person.Logical formLearned from770 sentences. Efficiency may pertain-to a system.Logical formLearned from590 sentences. Efficiency may pertain-to a male.Logical formLearned from577 sentences. Levels can be constituted-of-or-filled-with efficiency.Logical formLearned from543 sentences. Efficiencies can be increased.Logical formLearned from480 sentences. Improvements can be in efficiency.Logical formLearned from424 sentences. An (energy efficiency) can be improved.Logical formLearned from394 sentences. An (energy efficiency) can be increased.Logical formLearned from391 sentences.