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

得！快速回顾一下：统主管气体交换。

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

要理解机的价值，们需要了解统是如何运作的。

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

然后们讨论了统的中期补偿。

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

们观察其统，与哺乳动物的相差很大。

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的器官。

MERS attacks the respiratory system. It's killed almost a third of those who've gotten it.

MERS攻击人的统。这种病毒已经杀死了近三分一感染它的人。

The respiratory system includes the nose and lungs.

统包括鼻子和肺。

The most sort of effective way of these pathogens entering your body is through the respiratory system.

统是这些病原体进入人体内的最有效途径。

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

当们的统正常运作时，这一过程会自动发生。

This respiratory system, however, has its limits.

不过这个统也有局限。

As the flu virus attacks your respiratory system, a number of symptoms can start to reveal themselves.

当流感病毒攻击你的统时，很多病症就是随显现。

Hydrogen sulfide, on the other hand, affects the nervous system causing dizziness and pain in the respiratory system.

另一方面，硫化氢影响神经统，引起头晕和统疼痛。

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。

See, the flu is spread through internal contact with fluids produced by the infected person's respiratory system.

看，流感就是从已经感染的人的统中产生的液体进行传播的。

MERS attacks the respiratory system, and symptoms include fever and cough and can progress to pneumonia and kidney failure.

MERS会攻击统, 造成发烧和咳嗽, 进而发展为肺炎和肾功能衰竭。

But mechanical ventilators take over the process, getting oxygen into the body when the respiratory system cannot.

但是机械机替代了这一过程，在统无法正常工作时让氧气进入身体。

It's also what lets you reboot your whole respiratory system, with nothing more than a paper bag.

它也能让你重启整个统——只需要一个纸袋。

Even a tiny amount of it can kill someone in two days or less by shutting down respiratory or circulatory systems.

哪怕一点点剂量就可以在2天或者更少时间内通过闭塞或循环统致人于死地。

Children's respiratory systems are still developing They are more sensitive to the air pollutants.

儿童的统仍在发育中，他们对空气污染物更为敏感。

Now onto the lungs and respiratory system with respiratory medicine or pulmonology.

现在来看看肺和统，涉及医学或肺病学。