circle of circulation

例句：

1. 1. The blood flows through the body in a continuous cycle.
   血液在身体中以连续的循环流动。
2. 2.The company's stock price is influenced by its internal and external circulation.
   公司的股价受到其内部和外部流通的影响。
3. 3.The new policy aims to improve the efficiency of the country's economic circulation.
   新政策旨在提高国家经济流通的效率。