Now we are in the lung tissue, and have entered what we call the respiratory zone.

现在我们在肺组织中，已经进入了我们所说的呼吸区。

The respiratory zone includes the respiratory bronchioles and the alveoli.

呼吸区包括呼吸性细支气管和肺泡。

Likewise, carbon dioxide is taken into the lungs and oxygen is taken into the blood at the respiratory zone.

同样，二氧化碳进入肺部，氧气进入呼吸区的血液。

It can be helpful to think of the respiratory zone as being like a loading dock for a distribution center.

把呼吸区看成分配中心的一个装载码头。

Now that we've studied the conducting zone, let's take a look at the respiratory zone.

既然我们已经学习了传导区，让我们来看一看呼吸区。

As you can see below, small capillaries press up against the respiratory zone, bringing the blood close to the alveolar air.

正如你在下面所看到的，小毛细血管挤压着紧贴呼吸区，携带血液紧靠肺泡气。

Like a tree, the conducting zone branches into smaller and smaller tubes leading to the respiratory zone, which we'll discuss here momentarily.

像一棵树，传导区不断分成一个比一个小的管道一直到呼吸区，这也是我们马上要在这讨论的区域。

While the conducting zone moves air into and out of the lungs, the respiratory zone moves oxygen and carbon dioxide in and out of the blood.

当传导区运输空气进出肺部，呼吸区运输氧气和二氧化碳出入血液。

The respiratory zone includes the respiratory bronchioles and alveoli and moves the respiratory gases, that is oxygen and carbon dioxide, in and out of the blood.

呼气区包括呼吸性细支气管和肺泡，它们运送氧气和二氧化碳这些参与呼吸的气体进出血液。

But today you learned how it does work — including the mechanics of both simple diffusion and bulk flow, and the physiology of breathing, and the anatomy of the conducting zone, and the respiratory zone, of your respiratory system.

但是今天你们学到了它是如何工作的——包括简单扩散和整体流动的机制，呼吸的生理学，以及你呼吸系统的传导区和呼吸区的解剖学。

Functionally, the respiratory system is divided into the conducting zone, which moves air into and out of the lungs, and the respiratory zone, which moves oxygen and carbon dioxide into and out of the blood.

从功能上，呼吸系统被分为运送气体进出肺的传导区域和运输氧气和二氧化碳进出血液的呼吸区域。