pedigree hatching

例句：

1. 1. The breeder is trying toimprove the pedigree of their dogs.
   育种者正在努力提高他们的狗的品种纯度。
2. 2. The hatching process is crucialfor the survival of the chicks.
   孵化过程对于雏鸡的生存至关重要。
3. 3. Geneticsplays a vital role in pedigreehatching.
   遗传学在品种孵化过程中起着重要作用。