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TOEFL IELTS BNC: 1007 COCA: 1133

effective

adjective
/ɪˈfektɪv/
/ɪˈfektɪv/
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  1. producing the result that is wanted or intended; producing a successful result产生预期结果的;有效的
    • 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。
    • Some people believe that violence is an effective way of protesting.有些人认为暴力是抗议的有效方式。
    • an effective means/strategy/tool/method有效的手段/策略/工具/方法
    • 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。
    • The system has proved less effective than hoped.该系统被证明不如预期的那样有效。
    • effective against something drugs that are effective against cancer治疗癌症的有效药物
    opposite ineffective see also cost-effective
    Extra Examples
    • Long prison sentences can be a very effective deterrent for offenders.判处长期监禁可对违法者起到强有力的威慑作用。
    • This method is effective enough with greenfly.这种方法足以对付蚜虫。
    • We find advertising on the radio very effective.我们发现在收音机里做广告很有用。
    • What makes a TV programme politically effective?什么能使一个电视节目产生政治效应?
    • a particularly effective technique一种特别有效的技术
    • effective at keeping out the wind能有效地挡风
    • effective in helping people to stop smoking有效地帮助人们戒烟
    • The vaccines will be safe and effective if used properly.如果使用得当,疫苗将是安全有效的。
    Topics Successb1, Change, cause and effectb1
    Oxford Collocations Dictionaryverbs
    • be
    • look
    • prove
    adverb
    • extremely
    • fairly
    • very
    preposition
    • at
    • in
    See full entry
  2. [only before noun] in reality, although not officially intended实际的;事实上的
    • 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
    • In spite of what they are told, parents have no effective choice of schools.不管他们被告知什么,父母没有有效的学校选择。
    • He has now taken effective control of the country.他目前已实际上控制了这个国家。
  3. (formal) (of laws and rules法律和规则) coming into use生效的;起作用的
    • The new speed limit on this road becomes effective from 1 June.这条路的新限速规定自 6 月 1 日起生效。
    Oxford Collocations Dictionaryverbs
    • be
    • become
    • remain
    adverb
    • fully
    • partially
    • directly
    See full entry
  4. Word Originlate Middle English: from Latin effectivus, from efficere ‘accomplish’, from ex- ‘out, thoroughly’ + facere ‘do, make’.

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