求翻译：今天对经济周期的定义通常是指经济活动沿着经济发展的总体趋势所经历的有规律的扩张和收缩。在经济活动周期性变化的过程中，经济有长期增长趋势。是什么意思？

Today, the definition of the economic cycle usually refers to economic activities along the general trend of economic development experienced by a regular expansion and contraction. Cyclical changes in economic activity in the process, long-term economic growth.

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Today usually is refers to the economic activity to the economical cyclical definition the orderly expansion and the contraction which experiences along the economical development overall tendency.In the economic activity periodic variation process, the economy has the long-term growth tendency.

Today on economic cycle generally refers to the definition of economic activity along the economic development experienced by the overall trend of expansion and contraction of the law. At cyclic changes of economic activity during economic long-term growth trends.

Today on economic cycle generally refers to the definition of economic activity along the economic development experienced by the overall trend of expansion and contraction of the law. Cyclical changes in economic activity in the course of long-term economic growth trends.