A tiny spider crawled from the sac.

一只小蜘蛛正从袋子里爬出来。

Animals that poo out of their mouth sac?

从口囊里拉屎的动物？

One fine sunny morning, after breakfast, Wilbur stood watching his precious sac.

一个阳光遍地的早晨，吃过早饭的威伯又在观察他那珍贵的卵囊了。

They also have air sacs that go into their body.

它们体内也有气囊。

Humans make an empty yolk sac, and it disappears halfway through pregnancy.

人类在孕期会产生一个空卵黄囊，但是中途就消失了。

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。

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，而且有很轻的中空骨骼。

This shout out goes to East Sac County Community School District in Sac County, Iowa.

这个大声致意送给爱荷华州萨克县的东萨克县社区学区。

Here you are. -Oh so, cul de sac.

给你。-哦，这个词 cul de sac。

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的围心囊是个理想的放置地点。

Okay, see those two fleshy sacs under his chin, Morty?

好吧，看他下巴下的两坨肉，莫迪。

All right, as a quick recap… ovarian cysts are fluid-filled sacs on or in the ovaries.

好！快速回顾一下：卵巢囊肿是在卵巢内或表皮上充满液体的囊性物。

" Flanged" refers to the large cheek pads and pendulous throat sacs that some male orangutans have.

“凸缘”指的是一些雄性猩猩的大颊囊和下垂的喉囊。

Therefore, it is absolutely necessary that I take her egg sac with me.

因此，我绝对必须把它的卵袋带回去。

That causes sAC to produce a bunch of cAMP.

这导致sAC产生大量的cAMP。

Walruses have an air sac under their throat, which helps them float vertically in the water and sleep.

海象的喉咙下面有一个气囊，帮助它们在水中垂直漂浮和睡觉。

They made tiny webs near the sac.

它们在袋子附近结出一丁点大的网。

So this means there's fluid inside the air sacs.

这意味着气囊里有液体。

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

在鸡蛋里面，成长的胚胎产生一种名为卵黄囊的东西。

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

另外，羊膜囊可能破裂，有时称之为“羊水破了”。