ground squirrel

例句：

1. 1.The ground squirrel is a small mammal that lives in the forest.
   地松鼠是一种生活在森林中的小型哺乳动物。
2. 2.They were watching the ground squirrels for signs of life.
   他们正在观察地面上的松鼠，寻找生命的迹象。
3. 3. The ground squirrels are known for their ability to survive in harsh environments.
   地松鼠因其在恶劣环境中生存的能力而闻名。