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Ineffective 8010.Ineffective 英 ɪnɪ'Fektɪv]美 ɪnɪ'Fɛktɪv 释义 Adj 无效的,失效的;不起作用的

正面 8010.ineffective
英 [ɪnɪ'fektɪv]美 [,ɪnɪ'fɛktɪv]

背面
释义:
adj. 无效的,失效的;不起作用的
例句:
1. This is an ineffective method of controlling your dog.用这种方法控制你的狗不起作用。

1. canal <===> channel.
ineffective 无效的in-,不,非,effective,有效的。
ineffective (adj.)1650s, from in- (1) "not, opposite of" + effective. Related: Ineffectively; ineffectiveness."

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