He says it is true that such crops can have higher output with less cost,but added: No one knows the consequences that will have on soil fertility and the human body.

VOA: special.2010.05.18

So, these are some of the controversies that arise these days from cost-benefit analysis, especially those that involve placing a dollar value on everything to be added up.

以上即为近来对成本效益分析,引发的一些争论，尤其是其中那些,认为可以用金钱衡量一切的观点。

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