effectiveness
definitions
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noun
the quality of being successful in producing a desired resultru: эффективность
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noun
the degree to which something works or achieves its purposeru: степень эффективности
examples
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The effectiveness of the drug was tested.
Эффективность лекарства была протестирована.
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We measured the effectiveness of the campaign.
Мы измерили степень эффективности кампании.