There was a number of stations throughout the london administrative county routinely monitoring atmospheric pollution . 伦敦州管辖范围内有许多站定期地监测大气污染。
They pointed out that previous estimates of the urban factor on health were attributed entirely to air pollution . 他们指出以前的城市因素对健康影响的估计完全归因于空气污染。
The quetions one must ask are how much does air pollution cost, and what expense is justified in rectifying it ? 人们一定要问空气污染的代价多大，为了改正它，要花多少才算是合理的？
The american water works association and the water pollution control federation have become collaborators in its preparation . 美国水工程协会和水污染控制联合会在其准备中已协同工作。
Nitrous oxide pollution of the atmosphere occurs usually from the nitration of cellulose and other organic materials . 大气中的一氧化二氮污染通常由纤维和其他有机物质的硝化作用产生。
In this connection, it is appropriate to recall the guidelines of the united states federal water pollution control act of 1972 . 在这方面，我们应回忆一下美联邦1972年水污染控制法所制定的准则。
According to this plan, the money we spent on meeting government safety and pollution standards would be refunded to us . 根据这个计划，我们为达到政府规定的安全和污染的标准而花掉的钱将退还我们。
In light of the hazards and uncertainties associated with subsurface waste disposal, deep well injection may create pollution problems . 由于地表下废水处置的危险性和不可靠性，深井注入也会产生污染。
Thermal pollution is an inevitable concomitant of power generationan unavoidable implication of the second law of thermodynamics . 热污染是动力生产所无法摆脱的它与热力学第二定律有着难解之缘。
Differences in case fatality between high and low pollution areas could be due to many factors other than co concentrations . 轻、重污染区致死病的方面的差别可能是一氧化碳浓度以外的许多因素所造成的。
