| environ. |
contamination Introduction into or onto water, air, soil or other media of microorganisms, chemicals, toxic substances, wastes, wastewater or other pollutants in a concentration that makes the medium unfit for its next intended use (将微生物、化学药品、有毒物质、废弃物、废水或其他污染物引入到水、空气、土壤或其他介质的环境中并达到一定浓度，使这些环境不再适于既定的用途。); pollution The indirect or direct alteration of the biological, thermal, physical, or radioactive properties of any medium in such a way as to create a hazard or potential hazard to human health or to the health, safety or welfare of any living species (对生物、热学、物理或放射性的任何介质的属性进行间接或直接的改动，造成对人体健康、安全或任何生物物种的福利的危险或潜在危害。) |
