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| landfill covering The protective shielding, consisting of soil or some other material, that encloses disposal sites for compacted, non-hazardous solid waste, or secures disposal sites for hazardous waste to minimize the chance of releasing hazardous substances into the environment (由土壤或其他物质组成的保护性屏障，用来将已经压缩过的、无害的固体废弃物进行覆盖，或保障处理有害废物的处置场所，以尽量减少将有害物质释放到环境中的几率。) | |||
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