environment background survey
environment background survey
环境背景调查
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Firstly, the paper introduced the location survey of the Dai villages in Dehong State, including the natural environment and cultural background.
论文首先介绍了德宏傣寨区位概况，包括自然环境和文化背景。
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