effectiveness的英语例句
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Our research attempts to evaluate the effectiveness of the different drugs.
我们的研究试图对不同药物的疗效进行评估。
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The drugs work well at first but gradually lose their effectiveness.
这些药的效果起初非常好,但后来逐渐失效.
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To assert this is to denigrate the effectiveness of the police.
坚持这一点就是贬低警方的办事能力.
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