从道德风险角度而言，社会网络中起来的信任关系等替代性机制，减少了监督合同执行的交易成本。

From the perspective of moral hazard, a social network creates substitute mechanisms like trust relationship, which save the cost for monitoring.

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此外，一名负责监督合同的公务人员指责哈利伯顿在伊拉克、科威特和巴尔干半岛的承包合同中违法得到了最惠待遇。

Furthermore, a civil servant who oversaw contracts accused Halliburton of unlawfully receiving preferential treatment over contracts for work in Iraq, Kuwait and the Balkans.

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因此，我们推荐合同只是看作干预的一部分；它不该有意作为监督和治疗的替代。

Therefore, it is recommended that the contract be viewed as only a part of the intervention; it is not intended as a substitute for supervision and treatment.

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