记忆方法
1. ef- "out" + fic- + -acy. 在这里取 out 的引申义：完成、结束(finish, end)之意。
2. meaning: 事情做完了，事情做结束了. => work out, accomplish.
3. => 引申为：事情做完、做结束后的效果。=> 效果、功效。
2. meaning: 事情做完了，事情做结束了. => work out, accomplish.
3. => 引申为：事情做完、做结束后的效果。=> 效果、功效。
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词族 · efficacy
词形变化
中文词源
efficacy 功效
ef-, 向外。-fic, 做，词源同fact, effect.
英语词源
- efficacy (n.)
- 1520s, from Latin efficacia "efficacy, efficiency," from efficax (genitive efficacis) "powerful, effectual, efficient," from stem of efficere "work out, accomplish" (see effect (n.)). Earlier in same sense was efficace (c. 1200), from Old French eficace (14c.), from Latin efficacia; also efficacite (early 15c.), from Latin efficacitatem.
权威例句
- 1. Recent medical studies confirm the efficacy of a healthier lifestyle.
- 最新医学研究证实了较为健康的生活方式的好处。
- 2. This plan would have some efficacy in preventing any danger.
- 这计划对于防止危险会有些效力.
- 3. The treatment has no efficacy in that disease.
- 这种疗法对那种疾病不管事.
- 4. Self - efficacy ( SE ) is being applied into computer use, which was defined as computer self - efficacy ( CSE ).
- 计算机 自我 效能感 ( computer self -efficacy, CSE ) 是自我效能感理论在计算机培训 、 计算机辅助技术使用等行为活动中的应用.
- 5. The most commonly cited reasons for stopping the treatment were lack of efficacy and side effects.
- 最常举出的停止这种治疗的理由是无效和副作用.