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。

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？

It turns out that dolphins have a structure in their foreheads, just in front of their nasal sacs, called a melon.

原来，海豚额头上有一个结构，就在它们的鼻囊前面，叫做鼻瓜。

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。

The lungs consist of millions of tiny air sacs.

肺包含数百万个小肺泡。

"Cells are just watery sacs," says Niklason.

细胞就是个水囊。

It consists of a stack of flat, membrane-bounded sacs.

它由一大堆扁平的膜缘清楚的囊组成。

Your tears come from tiny sacs located in the outer corners of each eye.

你的眼泪是从眼睛外角里的小液囊流出来的。

The layout of most campsites embrace a suburban plan, even with cul-de-sacs.

大多数营地的布局则是在郊区的环绕中，甚至有一些死胡同。

Enough nectar to make just a pound of honey "(NHB)." Bees gather pollen in sacs and.

蜜蜂采集花囊中的花粉和花中的花蜜。

Alveoli form clusters (alveolar sacs) connected by alveolar ducts to the Bronchioles.

肺泡形成丛集的肺泡囊，经由肺泡管连接至支气管。

See those twin sacs coming out of her body? What will technology help us discover next?

看到从她身体里出来的那些两两相连的囊了吗？接下来科技还能帮助我们发现什么呢？

I would drive through the villages, around estates and cul-de-sacs, past farms and terraces.

我开车经过村庄，绕过屋舍和死巷，经过农场和梯田。

This condition causes the ovaries to become enlarged and develop many fluid-filled sacs, or cysts.

这会导致卵巢变大并有过多的充满液体的卵巢囊产生。

Cost-effectiveness in the laboratory: should we examine hernia sacs or calcified heart valves?

实验室中的成本效益：我们应该检验疝气囊或钙化心瓣膜吗？

Bursae are small sacs located between moving structures such as bones, muscles, skin and tendons.

滑囊是较小的囊状物，位于勾当的布局间，如骨骼，肌肉，皮肤和肌腱。

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。

Vacuoles in cells appear to be hollow sacs but are actually filled with fluid and soluble molecules.

细胞中的液泡好象是中空的，但实际上充满了液体和可溶分子。

It is often a stuttering journey, with cul-de-sacs and fog. And the goal can change as you approach it.

这个过程通常跌跌撞撞，一路上有死胡同，还有迷雾，但在你接近它的过程中，目标也许又会发生改变。

Mancini's men kept attacking through the middle, where congestion and go-nowhere cul-de-sacs awaited them.

曼奇尼的人仍然通过中路进攻，中路拥堵，无尽的死路在等着他们。

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。

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。

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。

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。

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。

The endoplasmic reticulum, a lacy array of membranous sacs, tubules, and vesicles, may be either rough(RER) or smooth (SER).

内质网，是一些不规则排列的膜囊，小管，和液泡组成的。

Large glands, such as the pancreas or the large salivary glands, consist of complicated combinations of tubes or little sacs.

大的腺体，如胰腺或大的唾液腺，是由管道或小袋的复杂结合组成的。

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。

Conclusion: CT can not only diagnose lumbar degenerative spondylolisthesis but also show the changes of dural sacs and nerve roots.

结论：CT不仅能诊断腰椎退变性滑脱症，而且还能显示硬膜囊和神经根的改变。

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。