求翻译：宏观经济学家研究的一些主要问题包括：经济增长和生活水平提高的源泉，平均劳动生存率（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，宏观经济学家效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？

Macroeconomists examine some of the major issues include: economic growth and a source of improved living standards, the average survival rate of labor (in the output of workers employed) trends; economic growth in the short-term fluctuations (recession and expansion); unemployment and the causes of

Some of the main issues that the macro-economists study include: economic growth and improved living standards, the average labor rates of survival of source (units) of the outputs of the hiring of workers; economic growth trends of change in the process (recession and expansion of short-term fluctu

The macroscopic economist studies some main questions include: The economical growth and the living standard enhance the fountainhead, the average work survival rate (unit hires worker delivers) the change tendency; In economical growth process short-term undulation (decline and expansion); The unem

Macroeconomists study some of the main issues include: the source of economic growth and improvement in living standards, average survival rate of Labor (unit output in hiring workers) trends; short-term fluctuations in economic growth (recession and expansion), causes of the phenomenon of unemploym

Macroeconomists study some of the main issues include: the source of economic growth and improvement in living standards, average survival rate of Labor (unit output in hiring workers) trends; short-term fluctuations in economic growth (recession and expansion), causes of the phenomenon of unemploym