众所周之，美国大多数民众都服用的高品质的医药。

Most people would be impressed by the high quality of medicine available to most Americans.

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但百分之十五的那些服用安慰剂，阿斯匹林。

But fifteen percent of those taking the placebo and aspirin had them.

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但百分之十五的那些服用安慰剂，阿斯匹林。

But fifteen percent of those taking the placebo and aspirin had them.

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