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efficacy 音标拼音: ['ɛfɪk,æsi] n. 功效,效力 功效,效力 efficacy n 1: capacity or power to produce a desired effect; "concern about the safety and efficacy of the vaccine" [synonym: {efficacy}, {efficaciousness}] [ant: {inefficaciousness}, {inefficacy}] efficacy \ef"fi*ca*cy\, n. [L. efficacia, fr. efficax. See
{Efficacious}.] Power to produce effects; operation or energy of an agent or force; production of the effect intended; as, the efficacy of medicine in counteracting disease; the efficacy of prayer. "Of noxious efficacy." --Milton. Syn: efficacy. [1913 Webster] Syn: Virtue; force; energy; potency; efficiency. [1913 Webster] efficience
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