Recently the chroma of the river water is a little yellowish. Does there exist any polluting sources nearby?
最近河水的色度有些偏黄，是不是附近存在污染源啊？
On the other hand, the affected area of high concentration can also be decreased by optimizing the position of polluting sources.
同时，优化污染源的位置也可以达到减少建筑群内污染物高浓度的影响区域。
Some French sources say their plan would involve highly polluting foreign steelmakers, for example, having to buy EU carbon-emissions credits.
一些法国知情人士透露该计划还涉及高污染的外国钢铁生产商，例如它们必须购买欧盟的二氧化碳排放指标。
In developed countries, polluting freshwater sources such as rivers, streams, lakes, and ponds is illegal, but still common practice for those who wish to avoid costly treatment of toxic waste.
在发达国家，污染河流，小溪，湖泊，池塘之类的淡水资源是违法行为，通常来说人们还是不愿意花大价钱来处理有毒的废料和废水。
Based on experimental models, the paper sets up three-dimensional steady heat transfer and flow physical model and mathematical model on a three polluting heat sources after simplification.
本文在实验模型的基础上，经简化建立了有三个污染源的置换通风三维稳定传热、流动的物理模型和数学模型。
It would be best if new energy sources could be exploited, and replace coal mines with cheaper, safer, less polluting energy sources.
如果能开发新能源，能有可便宜更安全更少污染的能源替代煤矿，那是最好的事情。
Conclusion: Direct cold-mill extraction is simple and there are abundant sources of raw materials, non-polluting, high extraction efficiency and production efficiency, worthy of promotion.
结论：橙皮原料来源丰富，直接冷磨萃取法生产工艺简单，投产快，无污染，提取效率和投产效益较高，值得推广。
Clean water sources quoted in the region, non-polluting, far away from the harmful gases, dust, sewage and other pollution of the environment, transport facilitation.
本区域引用水源清洁，无污染，远离产生有害气体、烟尘、污水等有污染的环境，交通运输便利。
Clean water sources quoted in the region, non-polluting, far away from the harmful gases, dust, sewage and other pollution of the environment, transport facilitation.
本区域引用水源清洁，无污染，远离产生有害气体、烟尘、污水等有污染的环境，交通运输便利。
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