常有丝分裂

例句：

1. 1.Mitosis is the process of cell division during which chromosomes are duplicated and distributed to daughter cells.
   有丝分裂是细胞分裂过程中染色体复制和分配到子细胞的过程。
2. 2. During mitosis, the spindle fibers pull the chromosomes toward the center of the cell.
   在有丝分裂过程中，纺锤纤维将染色体拉向细胞中央。
3. 3. Mitosis is essential for the growth and development of many organisms, including humans.
   有丝分裂对于许多生物体的生长和发展至关重要，包括人类。