n.浆膜；绒毛膜
Our gut strings are from a Indian craftsman using only mutton serosa. 我们的羊肠弦由印度工匠，仅使用羊浆膜制作而成。
Before ovulation and after ovalation, the change of serosa is not distinct. 产卵前和产卵后浆膜层无明显变化，产卵时厚度明显变薄。
The collagen in the serosa is made up of a triple helix molecular structure. 绒毛膜上的胶原组成了三角形的落选分子结构。
