The water is oxygenated as it flows over the rocks.

含氧水，因为它在岩石流动。

youdao

This paper suggests that the heavy oil is originated not only from water washing oxygenated mature oil, bio-degration or deasphalt process of this oil during immigration, but also from sub-humic ty…

本文提出了江汉盆地重质油的成因除具有成熟原油遭受水洗氧化作用、生物降解作用或运移中脱沥青作用外，还发现有的确系原生重质油，与膏盐环境偏腐泥型的不成熟生油岩有关。

youdao

Then it injects oxygenated water down into the sand to dissolve out the uranium.

FORBES: Energy's Latest Battleground: Fracking For Uranium

Lake sturgeon, he said, once populated the river thanks to rocks and boulders that created spots to lay eggs in well-oxygenated water that was safe from other predators.

WSJ: Real Rapids in Grand Rapids?

To try to combat the problem, the agency has twice released better-oxygenated water from Kielder Reservoir into the river in an effort to help salmon move out of the estuary and into the freshwater section of the river.

BBC: Hundreds of salmon die in heat