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n.有效，有力，有效性，效益，效用...
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The drugs work well at first but gradually lose their effectiveness.這些藥的效果起初非常好,但后來逐漸失效.To assert this is to denigrate the effectiveness of the police.堅持這一點就是貶低警方的辦事能力.Bad diction marred the effectiveness of his speech.措...
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Relapses of the malady, ineffectiveness of different drug regimens and even resistance to drugs are emerging.疾病的反復發(fā)作, 不同藥物治療方案的無效,甚至耐藥性正在出現(xiàn)....
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effectiveness的音標：effectiveness的英式發(fā)音音標為：[??fek't?vn?s]effectiveness的美式發(fā)音音標為：[?'f?kt?vn?s]...
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To evaluate the effectiveness and reliability of hemodialyzer LSHT 160.目的評價LSHT160型血液透析器的有效性及安全性.The good effectiveness of AMPS copolymers had been demonstrated in field application.AMPS聚合物及鉆井液體系在現(xiàn)場應用表明:該體系在應用中粘切容易控制,鉆井液...
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ineffectiveness的音標：ineffectiveness的英式發(fā)音音標為：[??n?'fekt?vn?s]ineffectiveness的美式發(fā)音音標為：[??n?'fekt?vn?s]...
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n.無效果，不起作用，無能力...