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

它们都富有凹槽即牙槽，以放置牙齿。

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

由于肺泡负责气体交换，这可不是好消息。

And pneumonia, often triggered by bacterial or viral infections, attacks the alveoli themselves.

肺炎——常常由细菌或病毒感染引发——会攻击肺泡本身。

Men have some breast tissue as well, but they lack milk secreting alveoli.

男性也有乳房组织，但他们没有分泌乳汁的腺泡。

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

在健康的宝宝体内，肺泡就像一个个充满了气的微型气球一样。

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5亿个肺泡。

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。

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

一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。