not achieving what you want to achieve; not having any effect 无效果的;不起作用的;不奏效的 The new drug was ineffective. 新药不起作用。 ineffective management 管理不善 - ineffective in doing something
The law proved ineffective in dealing with the problem. 事实证明这条法规未能真正解决问题。
Extra ExamplesTopics Change, cause and effectc1, Difficulty and failurec1These policies have proved ineffective. 事实证明这些政策并不奏效。 These weapons are totally ineffective against tanks. 这些武器在坦克面前根本不起作用。 chemicals that are very ineffective in killing weeds 除草效果很差的化学品 High interest rates proved to be ineffective in reducing inflation. 事实证明高利率并未有效降低通货膨胀。 It has been criticized as an unfair and ineffective system. 这种体制被批不公、无效。 She was offered psychotherapy, but this proved ineffective. 她接受了心理治疗,但这证明是无效的。 The evidence demonstrates that punishment is ineffective as a deterrent. 证据表明惩罚作为一种威慑是无效的。 The exemption clause in the contract is rendered ineffective by the new law. 新法律使合同中的免责条款变得无效。 The government continued with its much-publicized but largely ineffective policy of economic sanctions. 政府继续推行其广为宣传但基本无效的经济制裁政策。
Oxford Collocations Dictionaryverbs- be
- prove
- seem
- …
- extremely
- fairly
- very
- …
- against
- in
Word Originmid 17th cent.: from in- + effective.