And the endothelium of these capillaries is very porous.

这些毛细血管内皮细胞多孔性强。

These are porous molecular networks through which air can circulate. Their porosity gives them a huge surface area.

这些是多孔分子网络，空气过它们循环。它们多孔性使它们具有表面积。

The shell helped protect the embryo from diseases and attacks, but it was also porous enough to let gases reach the embryo so it could breathe and grow.

外壳有助于保护胚胎免受疾病和攻击，但它多孔性也足让气体到达胚胎， 使其能够呼吸和生长。

And there's - to me, it almost felt like there was this porousness to it - you know, that this was the River Styx, the road to the afterlife here on Earth.

对我来说，几乎感觉它有这种多孔性——你知道，这就是冥河，地球上往来世道路。