求难句翻译

QzzzqUID: 3200966

Although it is obvious that the standard by which society judges the welfare of the poor has been rising over time, it is not obvious that this rising standard represents an increase in the demand for welfare services for the poor, that this increase in demand as it is revealed by the social-political process is a function of the rise in per capita income which can be treated as an income elasticity.什么是明显的？什么是不明显的？
But these differences are less important for our purpose than are the differences with respect to price , marketability, and the time it takes to develop the various sources and to obtain income from them.什么重要？什么不重要？
The price of the sources of income streams that represent the acquired human capabilities of value in economic endeavor declined during the period relative to the price of material forms. “human capabilities of value" 是什么意思？

苏梳眠UID: 2717864

1it is obvious that the standard by which society judges the welfare of the poor has been rising over time, it is not obvious that this rising standard represents an increase in the demand for welfare services for the poor.读懂主句
2.for our purpose < with respect to price
3.人类评价的能力。