alkaline spring

例句：

1. 1. The soil is very alkaline, which makes it difficult for plants to grow.
   土壤非常碱性，这使得植物难以生长。
2. 2.The chemical reaction between acids and bases produces an alkaline solution.
   酸和碱之间的化学反应产生碱性溶液。
3. 3.The pH level of the water is alkaline, indicating that it contains a high concentration of carbon dioxide.
   水的pH水平是碱性的，表明它含有大量的二氧化碳。