fourfold degenerate state

例句：

1. 1.The fourfold degenerate state of the organism is a result of genetic mutations.
   生物体的四倍退化状态是由基因突变导致的。
2. 2. The study of fourfold degenerate states has important implications for understanding the evolution of life.
   研究四倍退化状态对于理解生命的进化具有重要意义。
3. 3. In this state, the cells are unable to divide and must undergo a process called mitosis to produce new cells.
   在这种状态下，细胞无法分裂，必须经历称为有丝分裂的过程来产生新细胞。