Based on the general micro-analysis of motives of outsourcing, the boundary of exhibition services' outsourcing depends on the marginal benefit and cost.

基于外包动机的一般微观分析，展览服务外包的边界取决于外包的利益与成本的边际考量。

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A rational decisionmaker takes an action if and only if the marginal benefit of the action exceeds the marginal cost.

一个理性的决策者只有当一个行动的边际利润大于边际成本时，才会采取这项行动。

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This paper describes cost-benefit analysis of electric power network reliability planning by defining the concepts of marginal cost and marginal benefit.

通过定义可靠性边际成本与可靠性边际效益概念，阐明电网规划中的可靠性成本一效益分析问题。

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After last year's ruling, Peter Littlejohns, NICE's clinical and public health director, noted that "there is a limited pot of money, " that the drugs were of "marginal benefit at quite often an extreme cost, " and the money might be better spent elsewhere.

WSJ: Of NICE and Men