缔约国在选择国际制度安排形式时，将在国家间治理成本与国家间缔约成本之间进行权衡。
States will trade off between interstate governance costs and contracting costs when they make the institutional choice.
国家间治理成本随着制度化水平的提高而递减，国家间缔约成本随着制度化水平的提高而递增。
Generally speaking, interstate governance costs will decline and interstate contracting costs will rise with the increase in the degree of institutionalization.
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