相比之下，成本-效益分析则通过比较不同人群的获益和损失，提出改变规则的对策，使收益大于损害。
Incontrast, cost-benefit analysis weighs the gains and losses to differentindividuals and suggests carrying out changes that provide greater benefitsthan harm.
文章明确了成本、收益的确切含义，论述了对成本收益分析的机会成本分析、边际分析和效益分析三种分析方法。
At first, this article makes clear the exact meaning of cost and income, and indicates three analysis methods: analysis of opportunity cost, analysis of limit deal and analysis of benefit.
分析结果显示，无论是对农户个人来说还是对整个社会来说，沼气池建设的收益均大于建设成本，且经济效益远远大于财务效益。
The evaluations reveal that the benefits were greater than the costs for either the farmers' individuals or society as a whole, and economical benefits far outweighed the financial benefits.
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