spermatocyte of the second order

例句：

1. 1. The spermatocyte stage is crucial for the development of male germ cells.
   精子细胞阶段对于男性生殖细胞的发展至关重要。
2. 2.During the spermatocyte stage, the cell undergoes significant changes in size and shape.
   在精子细胞阶段，细胞的大小和形状会发生显著变化。
3. 3. Spermatocytes are responsible for producing the spermatozoa that will eventually fertilize an ovum.
   精子细胞负责产生最终将受精的卵子的精子。