chorion laeve

例句：

1. 1. The chorion laeve is a crucial part of the embryonic development.
   囊胚是胚胎发育过程中至关重要的部分。
2. 2. During the early stages of development, the chorion laeve provides nutrients to the developing embryo.
   在发育的早期阶段，囊胚为发育中的胚胎提供营养。
3. 3. The chorion laeve plays a vital role in maintaining the balance between maternal and fetal cells.
   囊胚在维持母体细胞和胎儿细胞之间平衡方面起着重要作用。