Endoblast
n. 內胚層\\n[醫] 內胚層
??? 情景例句
I think I've got them all, but I'm not sure.
我想我都已經拍齊了， 但我不能肯定。
To swim
游泳
Only in a sparsely-populated rural community is it possible to disregard it.
只有在人口稀少的農村，才可以忽視準時的習慣。