laudanine

例句：

1. 1.The laudanine in the soil is essential for plant growth.
   土壤中的镧元素对植物生长至关重要。
2. 2. The laudanine in the soil is essential for plant growth.
   土壤中的镧元素对植物生长至关重要。
3. 3. The laudanine in the soil is essential for plant growth.
   土壤中的镧元素对植物生长至关重要。