degenerate basic solution

例句：

1. 1. The old building has been degenerating for decades.
   这座老建筑已经衰败了几十年。
2. 2. The food was starting to degenerate in the heat.
   食物在炎热中开始变质。
3. 3. The species is on the brink of degeneration due to habitat loss.
   由于栖息地丧失，该物种正濒临灭绝。