尿从厕所引入苇地自然净化，粪便制成堆肥施在公共森林里。
Urine from the toilets is diverted to a reedbed for natural purification, and the faeces are turned into compost for the community’s forest.
在净化空气上，整体的投入估计达到一百亿美元，这还不包含在公共运输上的投入。
The cost of the cleanup was estimated at $10 billion, not including the investment in mass transit.
其中包括：地热供热制冷，雨水收集，通过建筑朝向使采光最大化，风力发电，还有净化空气的屋顶公共果园。
These include geothermal heating and cooling, rainwater collection, maximized daylighting through building orientation, wind turbines, and communal rooftop orchards that purify the air.
毕业生可以在医药、石油化工和生物技术的产业从事工作，同时也可以在公共机构工作，比如污水净化、净化植物培养等。
Graduates of this field work in the pharmaceutical, petrochemical, and biotechnical industries, as well as public utilities such as water purification and sewage treatment plants.
近几十年来，中国的工业荣华已导致大面积重金属(如铅和镉)净化，形成可能难以察觉的无声的公共卫生危机。
Over several decades China's industrial boom has caused widespread contamination by heavy metals such as lead and cadmium, resulting in a silent health epidemic that can be difficult to spot.
近几十年来，中国的工业荣华已导致大面积重金属(如铅和镉)净化，形成可能难以察觉的无声的公共卫生危机。
Over several decades China's industrial boom has caused widespread contamination by heavy metals such as lead and cadmium, resulting in a silent health epidemic that can be difficult to spot.
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