The amounts of heavy metals accumulated in the aquatic plants were also related to the types and degrees of the pollution of the creeks 水生植物对重金属的富集还与河流的污染类型和污染程度有关：工业园区附近河流水生植物集镇居民区村级居民区。
However , each process simulation trial is unique and so it is not possible to extrapolate these results directly to actual production contamination rates 然而，每一个工艺的模拟试验是不一样的，所以不能用模拟试验的结果直接推断真实生产的污染程度。
But just as the speed and scale of china ' s rise as an economic power have no clear parallel in history , so its pollution problem has shattered all precedents 但是就象中国的经济崛起速度和尺度在历史上找不到可比较对象一样，它的污染程度也找不到任何先例。
Environmental protection agency studies indicate that indoor levels of pollutants may be 2 5 times , and occasionally more than 100 times , higher than outdoor levels 环境保护机构的研究表明，较之室外空气污染，室内空气污染程度或许要高出2 5倍，有时甚至100多倍。
Prices and quantities also determine the amount of environmental resources used and the level of pollution generated as the entities in the market carry out their activities 价格和数量也决定了市场中各实体在进行经济活动时使用的环境资源的数量和所造成的污染程度。
Costs could be even lower than that if there are major gains in efficiency , or if the strong co - benefits , for example from reduced air pollution , are measured 如果我们在效率上能够取得重要进展，或者获得有力的附带利益，比如说降低了空气污染程度的话，代价就有可能更低。
The degree of contamination turned out to be much more than expected and as a result the cost of decontamination increased to 450m against an original estimate of 22m 结果显示该地的污染程度远超预期，政府需要动用港币4亿5千万元进行清除污染工程，远超最初估计的港币2 , 200万元。
The teachers bemoaned the fact that the kids would have to stay inside all day again , on the heels of the previous week ' s two dangerous pollution index days 学校的教师也都唉声叹气地说，前一周刚有两天因为空气污染程度严重不能让孩子们户外活动，这下子孩子们又得一整天待在室内了。
The soil in copper - ore - tailings reservoir was compared with that in reference lands to find out the differences between them in physical and chemical natures and in heavy metals pollution 通过合理选择不同对照地，从土壤的理化性质、被污染程度比较，为尾矿库复垦的土壤改良提供依据。
These rivers all suffered similar problems to the shing mun river in the 1980s , though to a lesser extent . improvements arose from the same initiatives discussed above 八十年代这些河溪的污染问题与城门河相似，虽然污染程度不及城门河严重，但政府亦采取了相应的整治措施，使水质得到改善。
