单一税制的基本原理源自重农学派的奇特观点，他们认为只有土地才有生产力。
The rationale ofthe impôt unique stems from the singular physiocratic view that only land isproductive.
单一实现和组件的企业观点（enterprise-view）
从纯经济学的观点看，无论如何该区域已经克服了单一货币的一些障碍。
From a purely economic point of view, the region has already overcome some of the hurdles to a single currency, however.
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