set of degeneracy

例句：

1. 1.The species has experienced a significant degeneracy over the past century.
   这个物种在过去的一个世纪经历了显著的退化。
2. 2. The old building is in a state of degeneracy due to neglect.
   由于忽视，这座老建筑处于一种退化状态。
3. 3. The researcher discovered that certain genes are responsible for the degeneracy of the population.
   研究者发现某些基因对人口的退化负有责任。