求翻译：平均劳动生产率（单位雇佣工人的产出）的变化趋势；经济增长过程中的短期波动（衰退和扩张）；失业和通货膨胀现象产生的原因和控制手段；国家之间的经济联系。为了解释不同国家、同一国家不同时期经济表现存在差异的现象，宏观经济学家致力于考察宏观经济政策的实施过程和对经济的影响。是什么意思？

Average labor productivity (output units employed workers) trends; economic growth in the short-term fluctuations (recession and expansion); the phenomenon of unemployment and inflation, causes and control instruments; economic ties between the countries. In order to explain the different countries,

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The average labor productivity (unit hires worker delivers) the change tendency; In economical growth process short-term undulation (decline and expansion); The unemployment and the inflation phenomenon produce reason and control method; Between national economical relation.In order to explain diffe

Average labor productivity (output per unit of hiring workers) trends; short-term fluctuations in economic growth (recession and expansion), causes of the phenomenon of unemployment and inflation and control means; economic ties between the countries. In order to explain the different countries, dif

Average labor productivity (output per unit of hiring workers) trends; short-term fluctuations in economic growth (recession and expansion), causes of the phenomenon of unemployment and inflation and control means; economic ties between the countries. In order to explain the different countries, dif