Rivers can differ in size and there is no strict rule on how big a flow of water must be to be called as a river.

河流的流域会有不同，对于有多大的流量才能被称为河流没有严格的规定。

youdao

And then we have a flow of control.

之后我们有控制流程。

youdao

Electric current is a flow of atomic particles called electrons.

电流是由叫做电子的微粒流动而形成的。

youdao

Some believe that lifting the blockade would be opening the door to a flow of weapons that would be used to attack Israelis.

VOA: standard.2010.06.01

Third thing to notice is, there's a flow of control. The order which these things are going to happen.

第三件事情就是,我有一个控制流,这些事情有个要做的先后顺序。

麻省理工公开课 - 计算机科学及编程导论课程节选

The flow of information is really a flow of electrical potential and it goes in one direction only.

信息流实际上就是电势差的流动,并且流动是单向性的

耶鲁公开课 - 生物医学工程探索课程节选

To get this response from customers, you must generate a flow of hit products.

FORBES: Magazine Article

The money will be repaid by a flow of "virtual print fees" from the studios.

FORBES: Magazine Article

Well partly because universities are now so dependent upon a flow of money from the private sector.

BBC: NEWS | UK | Education | Higher education 'market' warning