The reverse flow, from developed to developing countries, is on the rise, too.

而反向流动的留学生人数，即从发达国家到发展中国家留学，也在上升。

For instance, six of the astronauts had either stagnant or reverse blood flow from their heads.

例如，六名宇航员头部的血流不是发生了停滞就是逆转。

The big difference here is we're reversing the flow.

这里最大的不同是我们正在逆转流程。

But it comes with a warning: simply reversing the flow of injustice is not justice.

但它伴随着一个警告：简单地扭转不公正的趋势并不是正义。

If that happens, pressures might eventually increase to a point where right-sided pressures are greater than left sided pressures, and so the flow of blood through the PDA can be reversed.

如果出现肺动脉高压，右心压力可能最终会超过左心压力，因此流经PDA的血流产生逆流。