与老区的
With the old district
以上为机器翻译结果，长、整句建议使用 人工翻译 。
本文从历史与现状方面分析了陕甘宁老区加强生态环境建设的必要性。
The necessity of strengthening ecology environment construction in ShaanGanNing Revolutionary Region was analyzed from its history and present conditions in this paper.
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