effectiveness
英[ɪ'fektɪvnɪs]
美[ə'fɛktɪvnɪs]
- n. 效力
词态变化
形容词: effective;
助记提示
1. ef- "out" + fect-. 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、做结束后的结果、效果、作用、影响等。
4. 做动词就表示：生效、完成、实现、达到、造成等含义。
5. effect + -ive + -ness.
英文词源
- effectiveness (n.)
- c. 1600, from effective + -ness.
双语例句
- 1. Our research attempts to evaluate the effectiveness of the different drugs.
- 我们的研究试图对不同药物的疗效进行评估。
来自《权威词典》
- 2. The drugs work well at first but gradually lose their effectiveness.
- 这些药的效果起初非常好,但后来逐渐失效.
来自《简明英汉词典》
- 3. To assert this is to denigrate the effectiveness of the police.
- 坚持这一点就是贬低警方的办事能力.
来自《简明英汉词典》
- 4. Bad diction marred the effectiveness of his speech.
- 措词不当影响了他演说的效果.
来自《简明英汉词典》
- 5. Bad diction marred the effectiveness of her speech.
- 文辞不当削弱了她演讲的渲染力.
来自《现代汉英综合大词典》