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呼吸或循环系统致人于死地。

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

MERS攻击人的呼吸系统。这种病毒已经杀死了近三分之一感染它的人。

You are some bizarre evolutionary oddity — a huge, human-shaped organism that doesn't have a respiratory system.

你是某种奇怪的进化怪胎——一个巨大的人形有机体，没有呼吸系统。

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呼吸系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会攻击呼吸系统, 造成发烧和咳嗽, 进而发展为肺炎和肾功能衰竭。

Timothy Brewer, an epidemiologist at UCLA, told Lydia there's a wide range but a lot of them hit your upper respiratory system.

加州大学洛杉矶分校的流行病学家 Timothy Brewer 告诉 Lydia，新冠症状范围很广，但许多都会危害上呼吸道系统。

Asthma affects the respiratory system, particularly the smaller airways, such as the bronchi and bronchioles.

哮喘会影响呼吸系统，尤其是较小的气道，例如支气管和细支气管。

Now, let's discuss the respiratory system in terms of functional zones.

现在，让我们就功能区来讨论呼吸系统。

In fact, a real powerful virus would skip the respiratory system altogether, even better than a cold virus.

事实上， 一个真正强大的病毒会完全跳过呼吸系统，比普通的感冒病毒更好。

As it turns out, the thin layer of water lining the respiratory system presents a challenge.

事实证明，呼吸系统的薄水层是一个挑战。

In short, surface tension created by water lining the respiratory system prevents the lungs from expanding.

简而言之，水在呼吸系统中形成的表面张力阻止了肺扩张。

See, air is a mixture of molecules. And when you're studying the respiratory system, you often need to focus on the oxygen, which makes up about 21% of it.

看，空气是分子的混合物。当你研究呼吸系统时，你经常需要关注氧气，氧气约占其中的 21%。

Not only do the water molecules hold onto each other, they hold onto the cells lining the respiratory system as well.

水分子不仅相互粘附，还粘附在呼吸系统的细胞上。

And if you compare the respiratory system of birds to those of the giant dinos, you'll see that the resemblance is pretty striking.

如果你将鸟类的呼吸系统与巨型恐龙的呼吸系统进行比较，你会发现它们的相似之处非常惊人。