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

大量离子能够加快sAC产生cAMP的速度。

Please, please, please, Templeton, climb up and get the egg sac.

谢谢你，谢谢你，谢谢你，坦普尔顿，爬上去把那个卵袋拿下来吧。”

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

囊块位于下颌后部的臼齿区附近。

A tiny spider crawled from the sac.

一只小蜘蛛正从袋子里爬出来。

Like the theropods, these titans used air sacs to breathe and had light, hollow bones.

像兽脚亚目类恐龙一样，这些巨人使用气囊来呼吸，而且有轻的中空骨骼。

Other times the amniotic sac might rupture, sometimes called " water breaking" .

另外，膜囊可能裂，有时称之为“了”。

Also, the amniotic sac often ruptures at this point if it hasn't already.

膜囊通常在宫口未开全的情况下裂。

Membranes in the sac that surrounds the fetus sometimes break at the start of childbirth.

在分娩开始时，包裹胎儿的囊膜有时会裂。

In at least three percent of pregnancies, the sac breaks too early.

在至少3%的怀孕中，卵囊会过早裂。

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

如果囊膜在24周之前裂，医生可能会建议终止妊娠。

That causes sAC to produce a bunch of cAMP.

这导致sAC产生大量的cAMP。

They climbed round and round on the sac, exploring their new world.

它们在袋子上绕圈圈，探索它们的新世界。

He crept along till he reached the egg sac.

它爬过去，一直爬到卵袋那里。

So you'd think–no yolk, no yolk sac.

所以你会认为我们不需要卵黄，也不需要卵黄囊。

Animals that poo out of their mouth sac?

从口囊里拉屎的动物？

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，你跟我说的不一样。我说 cul de sac。

The sac coats the irritant with layers of smooth nacre, also known as mother-of-pearl.

珍珠囊给刺激物外裹上一层层光滑的珍珠层即珍珠母。

The heart is nestled in a double-walled sac called the pericardium.

心脏位于一个叫做心包的双壁囊中。

Your lungs are like sponges that are made of tiny air sacs.

你的肺脏就像海绵，由许多小小气囊组成。