effectiveness

/ɪˈfɛk.tɪv.nɪs/ 名词 B2

中文：有效性、成效、效力

The property of being effective, of achieving results. (countable, uncountable) · The effectiveness of the drug was well established.
The capacity or potential for achieving results. (countable, uncountable)
The degree to which something achieves results. (countable, uncountable) · He questioned the effectiveness of the treatment.

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