Pneumonia is an infection of the alveoli that causes them to fill with fluid.

肺炎是种肺泡感染，会导致肺泡充满液体。

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

在每分支的末端都有叫做肺泡的小。

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

肺肿是指肺中被称为肺泡的微小结构破裂。

As alveoli are responsible for gas exchange, this is not good news.

由于肺泡负责体交换，这可不是好消息。

Both bones have an alveolus, or socket, for each tooth.

它们都富有凹槽即牙槽，放置牙齿。

The first part is the root, and it sits within the alveolus.

第部分是牙根，位于牙槽骨内。

These outpouchings are called alveoli, and there are about 500 million of them within the lungs.

这些突起称为肺泡，在肺部大约有5亿肺泡。

In healthy babies, the alveoli are like perfectly inflated mini-balloons.

在健康的宝宝体内，肺泡就像充满了的微型球样。

They represent tiny air-sacs or alveoli getting filled with fluid, and turning a shade of grey on CT scans.

这代表着肺泡中充满了液体，从而在CT显像中呈现灰色阴影。

If enough fluid fills some of these capillaries in the lungs, they can rupture, leaking blood into the alveoli.

旦足量积液充斥着肺部毛细血管，可能会出现破溃，血液渗出进入肺泡。

When the lungs are affected, the toxins damage the alveolar-capillary membranes, which can result in bleeding within the alveoli.

肺部受累时，细菌毒素会破坏肺泡毛细血管内膜，从而导致肺泡内出血。

The immune system releases additional white blood cells in the alveoli to help.

免疫系统也会在肺泡中释放出更多的白血细胞去帮忙。

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

这问题出现在肺部深处，叫做肺泡的微小中，肺泡是将二氧化碳转化为氧的部位。

But some of these invaders may get past the mucociliary escalator into the lungs, where they meet the alveoli.

但是有些入侵者有可能通过粘膜纤毛自动扶梯并进入到肺里，并接触到肺泡。

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

移出异物后，肺泡中的空周围围绕的大多是I型肺泡细胞。

And with each breath in, oxygen enters the alveoli and freely diffuses into the blood.

而每次呼吸，氧都会进入肺泡，通过自由扩散进入血液。

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，就会使肺泡内的空转换更加困难。

They represent tiny air-sacs or alveoli getting filled with fluid, and turning a shade of grey on a CT scan.

这代表着肺泡中充满液体，从而在CT显像中呈现灰色阴影。

The body also tries to force the fluid out of the alveoli through coughing.

身体也试图通过咳嗽，使那些液体脱离肺泡。

They reach your alveoli, little air sacs where the breathing  happens.

它们到达你的肺泡，即进行呼吸的小。