Adequate housing is possible in developed, mixed economies wherein the interests of the poor have prevailed.在发达的混合经济体中，充足的房源供给是可能的，在那里贫困阶层的利益较有保障。The profitability of a mixed economy is an essential prerequisite of economic growth.混合经济的赢利能力是经济增长的一个必要前提。