The organic matter may partially decompose, using up the dissolved oxygen in the sediment.

有机物会局部分解，消耗沉淀里的溶解氧。

One more detail bears mentioning: that is the warmer water also holds less dissolved oxygen.

水温升高会导致水的溶解氧含量减少。

Unable to wash downriver, the nutrients build up while dissolved oxygen in the water decreases.

养分因无法向下游流动而不断累积，同时水的溶解氧量却在不断减少。

Fey said an important finding was that the researchers were able to show such a notable drop in dissolved oxygen levels.

费伊，研究人员能够证实溶解氧水平的显著下降非常重要。

The dissolved oxygen can then diffuse into the tissues, where it's needed to make ATP.

溶解氧可以扩散到组，在组成ATP。

You see, the dissolved oxygen diffuses into the plasma first, and then it diffuses into the red blood cells.

你看，溶解氧首先扩散到血浆，然后扩散到红细胞。

Underwater, fish breathe with gills, which are feathery organs packed with blood vessels that absorb dissolved oxygen from the water.

在水下，鱼用鳃呼吸，鳃是羽毛状的器官，里面布满了吸收水溶解氧的血管。

In this lesson, we're going to discuss the significance of both hemoglobin and dissolved oxygen in terms of oxygen transport.

在这节课，我们将讨论血红蛋白和溶解氧在氧传输方面的重要性。

Therefore, while the amount of dissolved oxygen may be low compared to the amount bound to hemoglobin, dissolved oxygen is essential for oxygen transport.

因此，虽然溶解氧的量可能比与血红蛋白结的量低，但溶解氧对于氧的运输是必不可少的。

And that cold water allows it to hold onto lots of dissolved oxygen, which might help animals to get bigger and age slower than they would elsewhere.

而这种冷水使其能够保持大量的溶解氧，这可能有助于动物变得更大，寿命更长。

However, even the primary source of oxygen that fish get is not from the oxygen in H2O, but from microscopic bubbles of dissolved oxygen in the water.

然而，即使鱼获得氧气的主要来源也不是来自 H2O 的氧气，而是来自水溶解氧的微小气泡。