effective

adj.

1. 产生预期结果的；有效的
   producing the result that is wanted or intended; producing a successful result
   1. Long prison sentences can be a very effective deterrent for offenders.
      判处长期徒刑可对违法者起到强有力的威慑作用。
   2. Aspirin is a simple but highly effective treatment.
      阿司匹林药片治疗方法简便，效果却非常显著。
   3. drugs that are effective against cancer
      治疗癌症的有效药物
   4. I admire the effective use of colour in her paintings.
      我很欣赏她绘画作品中的色彩效果。
2. 实际的；事实上的
   in reality, although not officially intended
   1. the effective, if not the actual, leader of the party
      虽未居其位却实际上是党的领导人
   2. He has now taken effective control of the country.
      他目前已有效地控制了这个国家。
3. 生效的；起作用的
   coming into use
   1. The new speed limit on this road becomes effective from 1 June.
      这条路上新的限速规定自6月1日起生效。

1. ADJ-GRADED 有效的;能产生预期效果的
   Something that is effective works well and produces the results that were intended.
   1. The project looks at how we could be more effective in encouraging students to enter teacher training...
      该项目着眼于我们如何能够更加有效地鼓励学生参与教师培训。
   2. Simple antibiotics are effective against this organism...
      一般的抗生素能够有效对抗这种微生物。
   3. ...an effective public transport system.
      有效运转的公共交通系统
2. ADJ 实际的;事实上的
   Effective means having a particular role or result in practice, though not officially or in theory.
   1. They have had effective control of the area since the security forces left.
      自从安全部队撤离后，他们实际上控制了该地区。
   2. ...a restructuring that would have resulted in an effective increase on one of their most popular excursion fares.
      原本会使他们最热门的一条短途旅游线路的费用出现实质性上涨的调整
3. ADJ （法律、协议等）生效的，起作用的
   When something such as a law or an agreement becomes effective, it begins officially to apply or be valid.
   1. The new rules will become effective in the next few days.
      新规定将在几天后生效。

1. She said this would allow more effective planning.
   她说这会为更有效的规划创造可能。
2. The Secretary General says the declaration must now be backed up by concrete and effective actions
   秘书长说现在必须将宣言付诸具体有效的行动。
3. The packaging must provide an effective barrier to prevent contamination of the product.
   包装必须提供有效的保护，以免产品受污染。
4. At best they were effective as antidepressants for no more than four months.
   它们充其量也只能起到4个月的抗抑郁剂的效果。
5. The most effective new botanicals are extracts from cola nut and marine algae.
   这种极其有效的新型植物制剂是从可乐果和海藻中提炼出来的。
6. He called on the United States to play a more effective role in bringing peace to the region
   他呼吁美国在实现该地区的和平方面发挥更加富有成效的作用。
7. Condoms are an effective method of birth control if used with care
   如果使用得当，避孕套是很有效的避孕手段。
8. MDT is an effective treatment and could cure all the leprosy sufferers worldwide
   联合化疗是一种有望治愈全世界所有麻风病患者的有效治疗方法。
9. Punishment can never be an effective cure for acute social problems
   惩罚绝不是解决严重社会问题的有效办法。
10. Good customer relations require courtesy, professionalism and effective response.
    良好的客户关系需要做到礼貌、专业，并提供有效的回复。
11. The project looks at how we could be more effective in encouraging students to enter teacher training
    该项目着眼于我们如何能够更加有效地鼓励学生参与教师培训。
12. Simple antibiotics are effective against this organism
    一般的抗生素能够有效对抗这种微生物。
13. They have had effective control of the area since the security forces left.
    自从安全部队撤离后，他们实际上控制了该地区。
14. The new rules will become effective in the next few days.
    新规定将在几天后生效。
15. All these techniques are equally effective
    所有这些技术都同样有效。
16. It is my firm belief that an effective partnership approach between police and the public is absolutely necessary.
    我坚信警民之间进行有效合作是绝对必要的。
17. Team captains need to have effective man-management skills.
    队长需要掌握有效的人员管理技能。
18. One aim of these reforms is effective defence with minimal expenditure.
    这些改革的目的之一就是以最低成本实现有效的防御。
19. It would be unfair to suggest that he will be no more effective than his predecessors
    暗示他不会比前任们更有作为是不公平的。
20. The government said it wanted to overhaul the employment training scheme to make it cost effective
    政府表示希望彻底改革就业培训计划以实现低成本高效益。
21. The initial image projected was of a caring, effective president.
    他最初表现出的是一个充满爱心、办事有效的总统形象。
22. Roll on the day someone develops an effective vaccine against malaria.
    盼望有一天有人会研制出一种能有效预防疟疾的疫苗。
23. Taking risks is the only way employees can provide effective and efficient customer service
    员工能够为客户提供有价值、高效的服务的唯一途径就是敢于冒险。
24. Politically speaking, do you think that these moves have been effective?
    从政治角度来说，你认为这些举措有效吗？
25. When it is done properly, arts sponsorship can be more effective than advertising.
    如果方式得当的话，艺术赞助可能比做广告更有效。
26. Thanks to recent research, effective treatments are available.
    多亏近来的研究才有了有效的疗法。
27. A united effort is always more effective than an isolated complaint.
    联合行动总是比单个人抱怨更有效。
28. This medicine is effective if used within three years.
    这种药3年以内有效。
29. To link work at selected spots with that in entire areas is a very effective working method.
    点面结合是一个很有效的工作方法。
30. The order was no longer effective.
    这项命令已不再生效。

  effective effectual efficient【导航词义：有效的】

  effective adj. 有效的，起作用的

〔辨析〕指有效用的或能产生预期效果的。

  effectual adj. 〈正式〉有效果的，有实效的

〔辨析〕指产生希望或想要的结果的，只用于事物，如举措、药物、对策等。

  efficient adj. 有效率的，高效能的

〔辨析〕既可指人也可指事物，强调不浪费时间、金钱、能源等的。