calamina

例句：

1. 1.The calamina in the soil is what makes it fertile.
   土壤中的calamina使土地肥沃。
2. 2. The calamina in the soil is what makes it fertile.
   土壤中的calamina使土地肥沃。
3. 3. The calamina in the soil is what makes it fertile.
   土壤中的calamina使土地肥沃。