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，这些巨人使用气来呼吸，而且有很轻中空骨骼。

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

另外，可能破裂，有时称之为“水破了”。

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

通常在宫口未开全情况下破裂。

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

在分娩开始时，包裹胎儿有时会破裂。

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

在至少3%怀孕中，卵会过早破裂。

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

如果在24周之前破裂，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cAMP。

He looked at the egg sac. It was empty.

它看着那卵袋，已经空了。

Inside a chicken egg, the growing embryo produces something called a yolk sac.

在鸡蛋里面，成长胚胎产生一种名为卵黄东西。

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。

Animals that poo out of their mouth sac?

从口里拉屎动物？

They also have air sacs that go into their body.

它们体内也有气。

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

哦，你跟我说不一样。我说 cul de sac。

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

珍珠给刺激物外裹上一层层光滑珍珠层即珍珠母。

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

你肺脏就像海绵，由许多小小气组成。

Animals like cattle and sheep, also sacs of grain, all these have been used as money.

牛之类动物、谷物，都曾被用作货币。

A study of cardiac anatomy suggested the pericardial sac, at the organ's base, would be ideal.

心脏解剖研究表明心脏底部围心是个理想放置地点。

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

块位于下颌后部臼齿区附近。

The substance concerned, TDI-11861, belongs to a class of molecules called soluble adenylyl cyclase (sAC) inhibitors.

这种名为TDI-11861物质属于可溶性腺苷酸环化酶(sAC)抑制剂。