求翻译：宏观经济学是西方经济学理论的基础和重要组成部分，研究经济作为一个整体的行为，特别是诸如失业率、通货膨胀、经济增长和国际贸易平衡这类总量指标的变化。是什么意思？

Macroeconomics is the basis of Western economic theory and an important part of the study of economic behavior as a whole, in particular, changes such as unemployment, inflation, economic growth and international trade balance of such aggregate indicators.

macro-economics is the foundation Western economic theory and economic studies, important part as a whole, and, in particular, such as unemployment, inflation, economic growth and international trade balance of the class of the aggregate index changes.

The macroeconomics are the Western economic theory foundation and the important constituent, the research economy took an overall behavior, specially such as the unemployment rate, the inflation, the economical growth and the international trade balance this kind of total quantity target the change.

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