ectosarc

n.[生]原虫外膜

外胚质，指生物体胚胎在早期发育阶段形成的细胞外层

名词

1. The ectosarc is responsible for providing protection to the developing embryo.
外胚质负责保护发育中的胚胎。

2. During the gastrulation stage, the ectosarc undergoes significant changes in its structure.
在原肠胚阶段，外胚质的结构发生了显著的变化。