流通制度的英文：
circulation system
n. 血液循环；流通，传播；发行量
Have you been circulated with details of the conference?
你收到会议详情的通知了吗？
circulate counterfeit coins
使伪造的钱币流通
This magazine has a large circulation.
这本杂志发行量很大。
The circulation of gossip is abhorrent.
传播流言蜚语是可恶的。
The air was circulated mechanically.
空气循环是靠机械驱动的。
n. 体系，系统；设备；制度；方法；身体；次序
Is the system unstable?
是系统不稳定吗？
It was not a perfect system.
它不是一个完美的系统。
This is a sexpartite system.
这是一个由六部分组成的系统。
Anatomically, the nervous system is divided into the central nervous system and the peripheral nervous system.
解剖学上把神经组织分为中枢神经系统和周围神经系统。
disaccord between the economic system and political system
经济体制与政治体系间的不协调