Delta of the Changjiang River not only has advantaged predominance, but also has good complexion in the aspect of self-identity of culture because of the historical origin.
长江三角洲区域的历史渊源使得该区域在文化认同方面有着得天独厚的优势，也造就了良好的文化认同现状。
This is the "rich world of the Yellow River in Ningxia," the beginning of the Ningxia Plain is the origin.
这里是“天下黄河富宁夏”的开端，也是宁夏平原的起源。
Through the investigation on climate, geological condition and human activity of Yongding River Basin, the origin of wind-sandy land in Yongding River Basin was analyzed.
通过对北京市永定河流域气候、地质条件及人为活动的调查，分析了永定河流域风沙化土地的成因。
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