氧化钡

例句：

1. 1. The basal layer of the soil is crucial for plant growth.
   土壤的底层对植物生长至关重要。
2. 2. The research on basalt was conducted by a team of geologists.
   一个地质学家团队进行了玄武岩的研究。
3. 3. The discovery of new minerals in the basalt led to further exploration.
   在玄武岩中发现的新矿物引发了进一步的探索。