salt door

例句：

1. 1.The salt door is a natural barrier that prevents water from seeping in.
   盐门是一种自然屏障，防止水分渗透。
2. 2.The salt door is used to store and protect food from spoilage.
   盐门用于储存和保护食物免受腐败。
3. 3. The salt door is an important feature of the desert ecosystem, providing habitat for various species.
   盐门是沙漠生态系统的一个重要特征，为各种物种提供了栖息地。