| 释义 |
Cell divisions during development occur in a fixed sequence.发育期间的细胞分裂以固定顺序进行。The cells divide rapidly.细胞分裂得很快。Those cells divide and give many other different types of cells.那些细胞分裂，产生出许多不同种类的细胞。The nucleus splits during cell division.细胞核随着细胞分裂而分裂。 |