There's a high-tech underground trash disposal system.

有一个高科技的地下垃圾处理系统。

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Petroleum engineers devise ways to identify and extract underground reservoirs of oil, natural gas, steam, and hot water, as well as using the empty reservoirs for the safe disposal of waste.

石油工程师想方设法从地下储存库中提取石油，天然气，蒸汽，热水并用储存库安全处理废物。

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"One Network": improving the laying of underground sewage disposal pipes so as gradually to achieve "one network for one city".

“一网” 完善地下排污管网的铺设， 逐步形成“一城一网”。

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Britain needs to find a site for the long-term underground disposal of high-level radioactive waste.

BBC: Schematic of repository

Underground disposal is a safe approach that has been used for many years in areas where there are limited or no fresh water aquifers.

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Britain needs to find a site for the long-term underground disposal of high-level radioactive waste as some if it stays dangerous for 100, 000 years.

BBC: Cumbria ruled out of current nuclear waste dump plans