证明效力

证的英语翻译：

card; certificate; evidence; proof

明的英语翻译：

bright; clear; clear-sighted; honest; immediately following in time
understand
【医】 phanero-

效力的英语翻译：

render a service to; efficacy; force; potence; potency; vigour; virtue
【医】 efficiency; potency
【经】 effect