high alkalinity

例句：

1. 1.The soil is high alkalinity, which makes it difficult for plants to grow.
   土壤是高碱性的，这使得植物难以生长。
2. 2.The chemical solution has a high alkalinity, which can cause severe skin irritation.
   这种化学溶液具有高碱性，可能会引起严重的皮肤刺激。
3. 3.The pH level of the water is high alkalinity, which is not suitable for drinking.
   水的pH值是高碱性，不适合饮用。