nitrate cooling

例句：

1. 1. The soil was rich in nitrates and could support a variety of plants.
   土壤富含硝酸盐，可以支持多种植物生长。
2. 2.Nitrates are essential for plant growth and can be added to fertilizers.
   硝酸盐对植物生长至关重要，可以添加到肥料中。
3. 3. The city's water supply is contaminated with nitrates from runoff.
   城市的供水受到径流中的硝酸盐污染。