剑桥词典the type of cell division in which one cell divides into two cells that are exactly the same, each with the same number of chromosomes as the original cell 有丝分裂（细胞分裂过程，一个细胞分裂成两个相同的细胞，每一个都含有与母细胞相同数目的染色体） Our skin cells are continually replaced by mitosis. 我们的皮肤细胞不断地通过有丝分裂更新。 比较meiosis 返回 mitosis