请英语高手帮忙翻译几句话（中译英）谢谢！

It is a trade-off between social equity and efficiency to choose between large-sized units and small-sized units. The contradiction between the two, to some degree, is a measurement of the difference between maximization an enterprise’s interests and the maximization of social welfare. To the developers, it is an optimal allocation of resources to build large-sized units, particularly at the superior location, targeting high-income clientele. However, the same land could serve more households if small-sized units were built on it. There is no doubt that to build more large-sized units means that there will be less land resources of similar condition to serve the the mid-to-low income group,who can only afford small-sized units. This group of people can only hope nothing.

英语就基本上是这样了。但是想提醒楼主一下，并不是只有户型大小能决定企业利益或者社会利益。更重要的是开发密度，或者说容积率。

The relationship between luxury residence and economy residence contains the problem of accepting and refusing for the whole society be