But what we have seen over the past two years is that without reasonable and clear rules to check abuse and protect families, markets don't function freely.

但是，我们在过去两年中看到的是，如果没有合理的、清晰明确的规则去检查滥用，保护家庭，市场不能自由运行。

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Health groups welcomed the decision saying it would check the abuse of patents and open up access to affordable versions of patented medicines.

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So its members may at last start to see it as their role to be a check on the abuse of executive authority.

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In the end, our system only works -- our markets are only free -- when there are basic safeguards that prevent abuse, that check excesses, that ensure that it is more profitable to play by the rules than to game the system.

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