1
the effectiveness of sth
The effectiveness of the new drug is still under study.
这种新药的有效性仍在研究中。
效力；有效性
effectivenesses — plural of effectiveness
先理解核心含义，再看它在真实句子里的用法。
效力；有效性
the quality of being effective; the ability to bring about a desired effect
The effectiveness of the new drug is still under study.
这种新药的有效性仍在研究中。
有效性,达到结果的属性。
The property of being effective, of achieving results.
生效的力量；能够产生效果的品质
power to be effective; the quality of being able to bring about an effect
实现结果的能力或潜力。
The capacity or potential for achieving results.
产生强烈生理或化学效应的能力
capacity to produce strong physiological or chemical effects
The effectiveness of the new training program was clear from the test results.
新培训计划的效果从测试结果中看得很清楚。
We measured the effectiveness of the medicine in reducing pain.
我们衡量了这种药物在减轻疼痛方面的有效性。
Many people question the effectiveness of online advertising.
许多人质疑在线广告的效果。
The effectiveness of the new drug is still under study.
这种新药的有效性仍在研究中。
The team demonstrated its effectiveness in reducing costs.
该团队在降低成本方面展现了其有效性。
常用动词有 measure, evaluate, assess 等。
We need to measure the effectiveness of our training program.
我们需要衡量培训项目的有效性。
Not this
The new strategy is effectiveness.
Use this
The new strategy is effective.
错误地将名词“effectiveness”用作形容词，应使用其形容词形式“effective”来描述事物的性质。
Not this
We need to improve the effectiveness for the system.
Use this
We need to improve the effectiveness of the system.
介词使用错误，“effectiveness”通常与“of”搭配表示“...的效力”，而非“for”。
Not this
The effectivenesses of different approaches vary.
Use this
The effectiveness of different approaches varies.
错误地将不可数名词“effectiveness”用作可数名词，添加复数形式；应保持单数，谓语动词用第三人称单数。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
提高有效性
We need to improve the effectiveness of our training program.
我们需要提高培训计划的有效性。
衡量有效性
It is difficult to measure the effectiveness of advertising campaigns.
衡量广告活动的有效性是困难的。
整体有效性
The overall effectiveness of the new system has been questioned.
新系统的整体有效性受到了质疑。
成本效益
Cost-effectiveness is a key factor in choosing a treatment method.
成本效益是选择治疗方法的关键因素。
治疗效果
The study evaluated the treatment effectiveness of the new drug.
该研究评估了这种新药的治疗效果。
感知有效性
Perceived effectiveness influences customer satisfaction.
感知有效性影响顾客满意度。
Use effectivenesses naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：effect（效果）+ ness（名词后缀）→ 产生效果的能力，即有效性。
常见场景：学术写作、商业报告、管理评估 该词多用于学术、商业或管理类正式语境，表示达到预期效果的能力。
不可数名词，常与介词of连用，如the effectiveness of sth.
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.