When this fluid builds up, it makes gas exchange inside the alveoli much more difficult.

当这些液体积聚起来后，就会使肺泡内的空气转换更加困难。

At the end of each branch is a tiny air sac called an alveolus.

在每个分支的末端都有一个叫做肺泡的小气囊。

Emphysema is when the tiny structures in your lungs called alveoli, break down.

肺气肿是指肺中被称为肺泡的微小结构破裂。

In atypical or interstitial pneumonia, the infection is mainly just outside the alveoli in the interstitium.

在非典型肺炎和间质性肺炎中，感染主要发生在间质的肺泡外。

Free from particles, the inhaled air is now in the alveolus surrounded by mostly type I pneumocytes.

移出异物后，肺泡中的空气周围围绕的大多是I型肺泡胞。

And if there's one thing your body hates, it's a bunch of exotic material spicing up your sensitive alveoli!

如果有你身体讨厌的东西进来的话，就是一堆有毒的东西让你的肺泡激动起来了！

That problem happens deep in the lungs, in tiny air sacs called alveoli, which exchange carbon dioxide for oxygen.

这个问题出现在肺部深处，叫做肺泡的微小气囊中，肺泡是将二转为气的部位。

Initially, doctors had no way to alter the stretchability or squeeziness of their patients' air sacs.

最初，医生没有办法改变病人肺泡的拉伸性或挤压力度。

This blood absorbs oxygen from the inflated alveoli and leaves behind carbon dioxide.

这种血液从膨胀的肺泡中吸收气并留下二。

This large number of alveoli greatly increases the surface area for gas exchange.

大量的肺泡大大增加了气体交换的表面积。

On the other side of the pneumocytes are endothelial cells that line the capillary walls, which is what holds the blood.

而肺泡胞的另一边就是毛血管壁的内皮胞，毛血管携带的便是我们亲爱的血液。

The respiratory system takes in oxygen from the air and expels carbon dioxide and water vapor.

空气进入口和鼻，穿过喉咙和气管。气管发出左右分支分别进入两肺，之后以超过20次的分支形成大量的肺泡。

Now, the total surface area of alveoli is about 140 square meters or 1,500 square feet.

现在，肺泡的总表面积约为140平方米或1500平方英尺。

It then fills the alveoli, tiny air sacs that enable the exchange of oxygen and carbon dioxide between the lungs and blood.

然后填充肺泡，微小的空气囊能使气和二在肺部和血液之间交换。

Zooming out a bit and looking at the acinus, which is a bunch of alveoli, it just turns into one big cavity.

我们把镜头拉远点，看看肺腺泡，也就是一束肺泡的集合体；这时肺腺泡会变成一个大囊腔。

The alveoli are tiny air sacs that look like tiny clumps of grapes, that are wrapped up in a net of capillaries.

肺泡是微小的气囊，看起来像小丛葡萄，包裹于毛血管网中。

Alright … as a quick recap, pneumonia is an infection of the lungs that results in air sacs being filled with fluid.

好的，快速回顾一下：肺炎是肺部的一种导致肺泡充满液体的感染。

The respiratory membrane separates the alveolar air on one side from the blood on the other.

呼吸膜将一侧的肺泡空气与另一侧的血液分离。

Another helpful comparison for the arrangement of alveoli are clusters of grapes, where a single alveolus is like an individual grape.

另一个关于肺泡排列的有用比喻是多串葡萄，每一个肺泡就像一个葡萄个体。

Bacterial growth and death of alveolar macrophages produce powerful chemotactic factors that cause a large influx of polymorphonuclear leukocytes and monocytes from the peripheral blood.

军团菌的增长及肺泡巨噬胞的死亡产生了强大的趋因子，造成大量多形核白胞和单核胞从外周血涌入。