chorda-mesoderm

例句：

1. 1. The development of the embryo is a complex process involving multiple layers of cells, including the chorda-mesoderm.
   胚胎发育是一个复杂的过程，涉及多个细胞层次，包括中胚层。
2. 2.During the formation of the vertebrate nervous system, the chorda-mesoderm plays a crucial role in the formation of the spinal cord.
   在形成脊椎动物神经系统的过程中，中胚层在形成脊髓方面起着至关重要的作用。
3. 3. The study of the chorda-mesoderm has led to new insights into the developmental mechanisms of the nervous system.
   对中胚层的研究表明，有助于了解神经系统发育机制的新见解。