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efficiency

[ɪˈfɪʃənsɪ]
noun
[of person]   Tüchtigkeit die
[of machine]   Leistungsfähigkeit die
[of system]   Effizienz die

similar words

Complétez la séquence avec la proposition qui convient.

  • She has taken piano lessons for years, … she is a great piano player today.