Extra rules may be needed for firms in the "too big to fail" category.

对那些属于“大到不能倒”的企业来说，它们还需要额外的规定。

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Regulators have put SNS Reaal, the Netherlands' fourth-largest bank by assets, in the "too-big-to-fail" category, which means the government is required to come to the rescue should it appear to be on the road to failure.

WSJ: SNS Reaal Is in Talks to Avoid Bailout