| 释义 |
active pollution
基本例句
放射性污染
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。
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。 |