帮我看下,这句话什么意思~

题目

帮我看下,这句话什么意思~
Because increases in government purchases increase aggregate demand and increases in taxation decrease aggregate demand, the direction of the required changes in spending and taxation is generally easy to determine once we know the direction of the desired change in real GDP

答案

因为政府采购的增加加大了总需求,同时税收的增加又减少了总需求,消费和税收上所需要的变化方向就很容易被决定了,只要我们知道了实际GDP(国民生产总值)中所期望变化的方向.注意主干:the direction is easy to determi...