This respiratory system, however, has its limits.

不过这个呼吸系统也有局限。

The respiratory system includes the nose and lungs.

呼吸系统包括鼻子和肺。

The upper respiratory system includes the mouth, nose, nasal cavity, sinuses, and the pharynx.

上呼吸系统包括嘴、鼻子、鼻腔、鼻窦、和咽。

All right, as a quick recap, the respiratory system facilitates gas-exchange.

得！快速回顾一下：呼吸系统主管气体交换。

Then we talked about medium term compensation for the respiratory system.

然后我们讨论了呼吸系统的中期补偿。

When our respiratory systems are working correctly, this process happens automatically.

当我们的呼吸系统正常运作时，这一过程会自动发生。

But the respiratory system can be interrupted by a variety of conditions.

但是该过程也会因多种因素中断。

But gills are not the only respiratory system aquatic insect can have.

不过鳃并不是水生昆虫唯一用来呼吸的器官。

We look at the respiratory systems... It's not like those of mammals at all.

我们观察其呼吸系统，与哺乳动物的相差很大。

To appreciate the value of ventilation, we need to understand how the respiratory system works.

要理解呼吸机的价值，我们需要了解呼吸系统是如何运作的。