Private cost and benefit deviates from social cost and benefit, this is one of the most common problem for economic society.

私人成本和收益与社会成本和收益相背离是经济社会最普遍的问题之一。

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In spite of his few papers, his two articles -the Nature of the Firm and the Problem of Social Cost initiated the economic approaches to law rights and liabilities.

虽然他论著不多，但是《企业的性质》和《社会成本问题》两篇论文建立了用经济学的术语分析法律权利和责任的方法。

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But the underlying problem of European unemployment lies elsewhere: in social protection, inflexible wages and the prohibitive cost to employers of hiring in the first place.

ECONOMIST: The continent��s jubilant left breaks free