吴中东阅读 B84-1 page 341难哭了的句子，求解

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吴中东阅读 B84-1  page 341

When the object is optimal resource allocation, that combination of legal methods should be used that most nearly yields the allocation that would exist if there were no external costs resulting from allocating resources through market activity. There are external costs when the price set by buyers and sellers of goods fails to include some costs, to anyone, that result from the production and use of the goods.

感激！！！

小海洋UID: 3530868

理想的资源分配中，法律方法的搭配使用应该服务于最接近引导市场活动中的没有外在消耗的资源分配这个主旨。外在消耗存在于这样一种情况：当大宗商品的价格制定由购买者和销售者决定，而某些价格无法在商品的生产和物品的使用中被计算。

ouou318UID: 3323360

小海洋 发表于 2014-6-28 00:32
理想的资源分配中，法律方法的搭配使用应该服务于最接近引导市场活动中的没有外在消耗的资源分配这个主旨。 ...

能不能给分析下语法？谢谢！

小海洋UID: 3530868

that combination of legal methods should be used that most nearly yields the allocation that would exist if there were no external costs resulting from allocating resources through market activity

其实就是这一句里面that多次重复比较混淆视听。第一个that的使用也许是因为前文有内容起衔接作用；第二个that引导第一个宾语从句，把that 换成to，就很好理解句子意思了，比如，“used to yield the allocation...” 第三个that引导第二个宾语从句。