Word · Frequency #9115
efficacies
功效；效力；有效性
efficacies is the plural of efficacy.
the ability to produce a desired effect; effectiveness
- 1.
The ability to produce a desired effect under ideal testing conditions.
在理想测试条件下产生预期效果的能力。
- 2.
capacity or power to produce a desired effect
产生预期效果的能力或效力
- 3.
A degree of ability to produce a desired effect; effectiveness.
产生预期效果的能力程度；有效性。
在理想测试条件下产生预期效果的能力。；产生预期效果的能力或效力；产生预期效果的能力程度；有效性。；功效；效力；[医] 效能
In use
The efficacy of the new study method was clear from the test results.
We need more evidence to prove the efficacy of this approach.
The training program's efficacy impressed the managers.
concern about the safety and efficacy of the vaccine
the efficacy of [noun]
表示某事物的功效，最基础的结构。
The efficacy of the new drug has been confirmed.
这种新药的功效已被证实。
demonstrate/prove the efficacy of [something]
与动词搭配，强调证明功效。
Clinical trials demonstrated the efficacy of the treatment.
临床试验证明了该疗法的功效。
Connections
Collocations
- clinical efficacy
- 临床疗效
- The clinical efficacy of the new drug was confirmed in the trial.新药的临床疗效在试验中得到了证实。
- prove efficacy
- 证明功效
- Further studies are needed to prove the efficacy of this treatment.需要进一步研究来证明这种治疗方法的功效。
- efficacy of treatment
- 治疗效果
- The efficacy of treatment varies from patient to patient.治疗效果因人而异。
- evaluate efficacy
- 评估效力
- Researchers are conducting a study to evaluate the efficacy of the vaccine.研究人员正在进行一项研究以评估疫苗的效力。
- demonstrate efficacy
- 展示效能
- The drug demonstrated significant efficacy in reducing symptoms.该药物在减轻症状方面展示了显著的效能。
Learner notes
Memory Tip
联想'efficacy' = 'eff'（努力） + 'icacy'（像capability），努力+能力=功效。
Context & Register
语域：formal 常见场景：medicine、research 通常用于正式或专业语境，如医学、科研等领域，表示某物产生预期效果的能力。
Grammar Note
通常作不可数名词；表示不同种类或具体效力时可用复数 efficacies。
Pronunciation & Spelling
No perfect rhymes. The listed words share the '-acy' ending but differ in stressed vowel or stress placement; only 'legacy' has a similar initial /ɛ/ vowel but with different following consonants.
Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.