“流通”常常用来说钱、商品或者空气在很多地方之间来来去去。

"流通" is often used to describe money, goods, or air moving back and forth among many places.

比如商店里的东西从工厂到我们手里，就是一个流通的过程。

For example, the things in a store moving from the factory to our hands is a process of 流通.