He says Cuba's leaders must take steps too. "There are actions can and has taken today to open up the flow of information, provide some important steps to help that.
VOA: standard.2009.04.13
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
That's what this arrow at the right shows, the direction of the flow of information.
这就是右边这个箭头的含义,即信息流动的方向
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