The lungs consist of millions of tiny air sacs.
肺包含数百万个小肺泡。
Anatomically precise support for the heel and ankle, air sacs for extra spring and comfort each year bring apparent new refinements.
在结构上来说，对脚跟和脚踝的恰好支撑，还有气囊带来的额外弹性和舒适度，每年都会有明显的改进。
Once it gets in a person's lungs, the alveoli, or air sacs that take in oxygen, swell and fill up with fluid.
一旦病原体进入肺部，肺泡(类似吸入氧气的气囊)就会肿胀并充满积液。
The air sacs are surrounded by a dense network of minute blood vessels, or capillaries, which connect to the heart.
这些气囊被连接着心脏的浓密的毛细血管网包围着。
Instead, birds have a complex network of air sacs that work like bellows to pump a constant stream of air through the lungs.
相反地，鸟类有一个复杂的肺泡结构，就像一个风箱把源源不断的空气打进肺里。
Yep, Plus the air sacs mean that birds weigh less than you'd expect, which makes flying less costly in terms of energy.
是的。加上肺泡的话就说明鸟比我们想象的要轻，那样飞行就不会那么耗能量。
This showed that noises made from tubes without air sacs, the tubes mimicking the modern vocal tract, were much clearer.
实验显示，没有气囊的管子发出的声音更为清晰，而这种管子模拟的正是现代人类的声道。
This week amniotic fluid is helping the air sacs in your baby's lungs get ready for breathing as she practices inhaling and exhaling.
这周，当婴儿羊水会帮助肺部的肺泡为慢慢的呼吸做好准备。
This week, amniotic fluid is helping the air sacs in your baby's lungs get ready for breathing as she practices inhaling and exhaling.
这周，当婴儿羊水会帮助肺部的肺泡为慢慢的呼吸做好准备。
More sounds meant more information could be Shared, giving those who lacked air sacs a better chance of survival in a dangerous world.
声音增多意味着可以分享的信息增多，这使得那些没有气囊的祖先在危险环境里的生存几率大大增加。
Dinosaurs possessed a highly efficient bird-like breathing system involving large Numbers of air sacs permeating their body cavity and bones.
恐龙具有一个类似于鸟类的高效率呼吸系统，有很多气囊分布在体腔和骨骼中。
Our ancestors from 3.3million years ago had hyoids that were similar in shape to those of today’s apes, suggesting they too had air sacs.
330万年前，我们祖先的舌骨与今天猿的舌骨形状类似，这表明那时候他们已经拥有气囊了。
Our ancestors from 3.3million years ago had hyoids that were similar in shape to those of today's apes, suggesting they too had air sacs.
330万年前，我们祖先的舌骨与今天猿的舌骨形状类似，这表明那时候他们已经拥有气囊了。
COPD occurs when the airways and air sacs in the lungs become inflamed or damaged, most often due to smoking, and is more common after age 45.
COPD通常发生于肺部的气道或肺泡发生炎症或损伤，大多由吸烟导致，而且通常发生在45岁之后。
Emphysema is characterized by the dysfunction or damage of lung tissues, as a result of which the air sacs and airways lose their normal function.
肺气肿是指肺组织受到破坏或失去正常功能，导致肺气囊与呼吸道受损。
Combining several techniques enables researchers to measure the rate of diffusion of these helium gas molecules, which reflect the size of the air sacs in the lung.
联合其他的仪器研究者能够测量出氦气分子的扩散率，这将反映出肺中肺泡的大小。
Lungs are more complex than either of these organs, containing several different cell types that form delicate, hairlike capillaries and a maze of branching air sacs.
但是肺的复杂性要超过这两种器官，肺里有几种不同的细胞，要分别形成细微的、头发丝一样的毛细血管，和迂回曲折的分支状的气囊。
How did the dolphin's clicks get transmitted from its air-filled nasal sacs into the ocean water?
海豚发出的滴答声是如何从充满空气的鼻囊传播到海水中的呢？
These sounds, it has been found, are produced in the air-filled nasal sacs of the dolphin.
人们发现，这些声音是由海豚充满空气的鼻囊发出的。
The lungs are made up of small sacs called alveoli, which fill with air when a healthy person breathes.
肺由称为肺泡的小气囊组成，当健康的人呼吸时会充满空气。
In the lungs of mammals, air flows in and out of small sacs, where oxygen is extracted and carbon dioxide released.
在哺乳动物的肺部，氧气通过小液囊进入，二氧化碳从中排出。
Air circulating through these sacs transfers oxygen into the bloodstream that picks up the blood's carbon dioxide waste.
对于哺乳动物，每次吸气都将富氧空气带进肺中被称为肺泡的“死胡同”。这些在肺泡中循环的空气通过与肺毛细血管的血液进行气体交换，输进氧气并带走血液中的二氧化碳。
Apparently this was one of Stichelbaut's best flyers and had returned from a race from Tours with his air - sacs over inflated.
显然，这一种鸽子是斯蒂克·博特最好的飞鸽之一。该鸽子从图尔斯赛事飞回来后，颈部气囊感染。
Apparently this was one of Stichelbaut's best flyers and had returned from a race from Tours with his air - sacs over inflated.
显然，这一种鸽子是斯蒂克·博特最好的飞鸽之一。该鸽子从图尔斯赛事飞回来后，颈部气囊感染。
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