屈原跳江故事:中译英，请高手帮忙

To in the Xi'an atmospheric environment sulphur dioxide, the nitrogen oxide compound, always the suspended particulate matter and the falling dust and so on four kind of main pollutant average densities have made the preliminary analysis along with the time variation tendency, and has carried on the appraisal using the gray connection analytic method to each year atmospheric environment quality condition, finally proposed improves the Xi'an atmospheric environment quality the measure or the suggestion.

对西安市大气环境中的二氧化硫、氮氧化物、总悬浮微粒和降尘等四种主要污染物的平均浓度随时间变化趋势作了初步分析，并利用灰色关联分析法对各年大气环境质量状况进行了评价，最后提出改善西安市大气环境质量的措施或建议。

To the sulphur dioxide,nitrogen oxide in atmosphere environment in Xian City and always suspend particle and decline a dust etc. the average density of four kinds of main pollutants at any time the variety trend made the first step analysis, and made use of the gray connection analysis method to carry on an evaluation to each year atmosphere environment quality condition, put forward the measure or the suggestion that improves atmosphere environment quality in Xian City finally.