流动 (liú dòng): to flow

The water in this small river is very clear; it flows down from the mountain and keeps flowing eastward.

There is a large population movement in the city; many people commute from the suburbs to the city center in the morning.

Opening the window allows the air to circulate, and the stuffy feeling in the room quickly disappears.

In the library, people read quietly; only the occasional sound of moving footsteps breaks the silence.

With the development of the Internet, the flow of information is getting faster and faster, and people can access global news at any time.