八万四千由旬:试翻译英语，下一段，写明句式即可，学术论文~本人英语实在太差，英翻汉还成。

Urumqi City, located in northwest China, who suffer from drought, extremely poor natural conditions, the study of ecological security in the region is extremely important. Through SAS statistical software to the author from 1990 to 2004, the Urumqi City, 15 ecological safety factor analysis examined 15 years into the ecological security of Urumqi City and laws and given several major ecological impact Urumqi City of factors and the ecological security and ecological security factor analysis of the relevance, the Urumqi City in the next few years and changes to ecological security deterioration of the ecological analysis and viable solution.

The Chinese northwest region of ground in the Urumqi City, regularly dry and little rain, the natural condition is extremely bad, therefore, research's ecosystem's safe problem of this region is extremely important.The writer carries on through 15 factors with safe ecosystem of the SAS covariance software's Urumqi to 1990-2004 years City analytical, studied into the ecosystem safe circumstance and regulation of 15 in the last years Urumqi Cities, and give the relativity of several factor and each ecosystem factor and ecosystem safeties which mainly influence the safe circumstance of ecosystem in Urumqi City analyze, putting forward future for several years, Urumqi City ecosystem safety of variety circumstance and aim at analysis and viable solution of[with] ecosystem depravation.