depression basin

例句：

1. 1.The depression basin is a natural feature that attracts tourists from all over the world.
   这个盆地是一个自然景观，吸引了来自世界各地的游客。
2. 2. The valley was filled with water during the drought, creating a depression basin.
   干旱期间，山谷被水填满，形成了一个凹陷盆地。
3. 3. The depression basin is home to many rare species of plants and animals.
   这个凹陷盆地是许多稀有植物和动物的家园。