2 (Exercise) For the case of constant elasticity of demand, what is marginal revenue?

在需求弹性不变的情况下，边际收益是多少？

youdao

Part of the increase stems from human activities—directly, in the case of construction, or indirectly, when it results from clearing vegetation from marginal land in order to farm it.

尘埃量的增加一部分原因源于人类活动——比如，建筑，它属于直接原因，又如，为了耕种而将边际地块上的植物清除所造成的后果就属于间接原因。

youdao

Part of the increase stems from human activities-directly, in the case of construction, or indirectly, when it results from clearing vegetation from marginal land in order to farm it.

部分原因是人类活动- - -例如建筑施工这样的直接原因，或者是为了开垦贫瘠土地而清理植被这样的间接原因。

youdao

Yet one fact not making news is that it is still the case that the highest marginal tax rates in America do not fall on the highest incomes, like Lefty, but on certain of the working poor, many of them single parents, who are being taxed at rates approaching 90% as they lose benefits attempting to better themselves.

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"This, and the fact that UK oil revenue is forecast to decline in any case, would make the budgetary impact marginal, " says the note.

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