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placebo

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The rest received a "dummy" placebo pill with no active ingredients.(剩下的一半志愿者则每天服用一颗“假的”没有有效成分的安慰剂。)
But fifteen percent of those taking the placebo and aspirin had them.(但百分之十五的那些服用安慰剂，阿斯匹林。)
The drug is proven effective if it performs better than the placebo.(如果药品比安慰剂表现好，则证明药品有疗效。)
It was a placebo controlled trial. And it shows this benefit.(这是一个安慰剂对照的试验，得到获益的结果。)
And a third group received a placebo.(第三群人吃的则是安慰剂。)
The placebo group only lost an average of 2 lbs.(而另一组仅仅减掉2磅。)
Such trialswould not necessarily require a placebo arm.(这样的研究并不必然需要安慰剂组。)
But it was only a placebo, a harmless substance.(但是那只是一片安慰剂，一种无害的物质。)
The fourth will take two placebo pills.(第四组服用两片安慰剂。)
The placebo group took higher rescue medication as well.(安慰剂组术后使用止痛药更多。)

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