archiblast

例句：

1. 1. The archiblasts are the earliest signs of life on Earth.
   胚胎是地球上最早的生命迹象。
2. 2. The archiblasts were discovered in a fossilized eggshell.
   在一块化石化的蛋壳中发现了胚胎。
3. 3. The archiblasts are responsible for the development of the nervous system.
   胚胎负责神经系统的发展。