subsoil ice

例句：

1. 1. The glaciers are slowly melting due to global warming.
   由于全球变暖，冰川正在缓慢融化。
2. 2.The subsoil ice is a valuable resource for the local economy.
   亚表层冰是当地经济的一个宝贵资源。
3. 3.The subsoil ice is also used for recreational purposes such as skiing and snowboarding.
   亚表层冰还被用于滑雪和雪板运动等娱乐活动。