active pollution

• 放射性污染

active pollution的用法和样例：

例句

1. Radioactive elements are at the normal background level,causing no deleterious pollution.
   环境辐射在正常范围之内，不存在任何人为造成的放射性污染。
2. However, we have to see the following radon and radioactive pollution in industrial waste residue.
   然而工业废渣中存在着氡和放射性污染。