A preponderance of those ions speeds up the rate at which sAC produces camp.

量离子能够加快sAC产生cAMP速度。

The sac was near the molar area at the back of the jaw.

囊块位于下颌后部臼齿区附近。

The only cells it really infects are what we call respiratory epithelial cells, a one-cell layer of cells that kind of protect the breathing tubes and the lungs, all the way down to the bottom, where we have air sacs.

唯一真正受到感染细胞是我们所说呼吸上皮细胞，一种保护呼吸管和肺单细胞层，一直到管道底部有气囊地方。

Specialized lungs and air sacs allowed them to take in more oxygen and also made their skeletons lighter, hollowing out bone into a sturdy, honeycomb structure.

专门肺和气囊可以吸收更多氧气，也使它们骨骼更轻，中空骨骼变成坚固蜂巢状结构。

The cholecystokinin makes its way to the gallbladder, the thin walled, green sac snuggling up against the liver, and signals it to squeeze out some bile through the cystic and bile ducts into the small intestine.

当胆囊收缩素到达胆囊（即位于右方肋骨下肝脏后方梨形囊袋构造），胆囊激素信息指引下开始收缩，将胆汁通过胆囊管和胆管排入小肠内。

If the sac breaks before 24 weeks, doctors may recommend ending the pregnancy.

如果囊膜24周之前破裂，医生可能会建议终止妊娠。

Egg laying. It's time I made an egg sac and filled it with eggs.

“产卵。是我该做一个卵袋，里面装满卵时候了。”

Animals that poo out of their mouth sac?

从口囊里拉屎动物？

They also have air sacs that go into their body.

它们体内也有气囊。

Oh, you say different to me. I say cul de sac.

哦，你跟我说不一样。我说 cul de sac。

Here's one that's sort of reading the DNA and making RNA. And then this one is carrying a huge sac of neurotransmitters from one end of the brain cell to the other.

这里有一种读取DNA和制造RNA方法。然后这一只携带着一个神经递质囊从脑细胞一端传到另一端。

The air sac's not developed, it's likely lungs are not developed, so you're not suffocating something in the egg by coating it with the corn oil.

气囊还没有发育好，很可能是肺还没有发育好，所以你鸡蛋上涂上玉米油不会让鸡蛋里东西窒息。

So, while sAC appears to be a unique link in the chain of sperm mobilisation, the body has built plenty of redundancy into its means of generating cAMP.

因此，尽管sAC似乎是精子移动链中一个独特环节，但人体其生成cAMP过程中制造了量冗余。

Early on in male development, testosterone helps the external sex organs to differentiate into male genitals and causes the testes to descend from the abdomen into the scrotal sac.

男性发育早期，睾酮帮助外部性器官分化成男性生殖器，还可促进睾丸从腹腔降入阴囊。

The bladder is a hollow, collapsible sac that temporarily stores urine. Like the kidneys, it's retroperitoneal, located posterior to the pubic bone and anterior to the rectum.

膀胱是一个中空、可折叠囊，暂时储存尿液。像肾脏一样，它位于腹膜后，位于耻骨后，直肠前。

(their highly vascularised airs sacs have a collective surface area of about 50 square metres), viruses find it easy to make a similar journey.

（它们高度血管化空气囊总表面积约为50平方米），病毒很容易进行类似旅行。

At the time, cell biologist George Palade guessed that small sacs filled with liquid called " vesicles" had something to do with it.

当时，细胞生物学家乔治·帕拉德猜测，被称为 " 囊泡 " 充满液体小液囊与此有关。

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，微小空气囊能使氧气和二氧化碳肺部和血液之间交换。

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

肺泡是微小气囊，看起来像小丛葡萄，包裹于毛细血管网中。

Each egg contains one embryo and a yolk sac which the embryo feeds off and helps it develop inside the egg.

每枚卵中含有一个胚胎和一个卵黄囊，胚胎从卵黄囊中汲取营养，从而得以卵中发育。