Basically what that is is it's an infolding of this respiratory surface where we can have a high surface area.

基本上这就是呼吸面内折，这样我们可以拥有较大表面积。

Now what's interesting about these two is that they are not formed, we don't think, by an infolding of the membrane.

这两者有趣之处在于，我们们并非通过膜内折形成。

So you know the golgi apparatus, endoplasmic reticulum, lysosomes, vesicles, all these things are made, we think, from the in folding of this what's called the endomembrane system or membrane on the inside.

所以，你知道高尔基体、内质网、溶酶体、囊泡，所有这些结构，我们，都是由这个所谓内膜系统或内部膜内折形成。