isosulfur map

例句：

1. 1. The isotopes in the soil are essential for plant growth.
   土壤中的同位素对植物生长至关重要。
2. 2.The isotopes in the water are important for human health.
   水中的同位素对人类健康至关重要。
3. 3. The isotopes in the air are a concern for environmentalists.
   空气中的同位素对环保主义者来说是一个问题。