The jellyfish absorbs oxygen through its ectoderm and can store it in the mesoglea.

水母通过外胚氧气，并将其储存在中胶中。

When he scratched the top of such a stack with a scalpel and exposed it to water, it did, indeed, come loose and fall off as the water seeped into the underlying glue.

他用一把手术刀将这种堆叠结构的表后，让它与水接触。水渗入下方的胶，表果真松动并脱落。