invaginating

自然或通过外科手术折叠或包裹成鞘状或囊状结构。

To fold up or enclose into a sheath-like or pouch-like structure, either naturally or as part of a surgical procedure.

向内翻转或折叠。

To turn or fold inwardly.

向内折叠以形成原本没有的空腔,如囊胚形成原肠胚时。

To fold inward to create a hollow space where none had existed, as with a gastrula forming from a blastula.