nondegenerate sesquilinear form

例句：

1. 1. The DNA of the ancestor species is nondegenerate, which means it has not lost any of its original characteristics.
   祖先物种的DNA是非退化的，这意味着它没有失去任何原始特征。
2. 2. The research on this material is nondegenerate, indicating that it retains many of its original properties even after yearsof use.
   关于这种材料的研究表明，即使经过多年的使用，它仍然保留了许多原始特性。
3. 3. The nondegenerate design ensures that the device can be used for a long time without losing efficiency or functionality.
   非退化的设计确保了设备在长时间使用后仍能保持效率和功能性。