relict permafrost

例句：

1. 1. The relict permafrost is a unique geological feature that has been preserved for millions of years.
   遗迹永久冻土是一种独特的地质特征，已经被保存了数百万年。
2. 2.The team spent months mapping the relict permafrost to understand its impact on ecosystems.
   该团队花了数月的时间绘制遗迹永久冻土图，以了解其对生态系统的影响。
3. 3.The discovery of new species in the relict permafrost could provide valuable insights into the history of life on Earth.
   在遗迹永久冻土中发现的新物种可以为我们提供有关地球上生命历史的宝贵见解。