spermoblast

例句：

1. 1. The spermatogonium is the first stage of spermatogenesis.
   精子发生的第一个阶段是精原细胞。
2. 2.Spermatogonia are the cells that produce sperm.
   精原细胞是产生精子的细胞。
3. 3. The spermatogonium undergoes several stages of differentiation before becoming a sperm cell.
   精原细胞在分化为精子细胞之前会经历几个阶段。