Folk art be called national treasures, especially in the middle reaches of Yellow River is located in Shanxi, a special human geography to create a unique arts and crafts here.

民间艺术堪称国宝，尤其在地处黄河中游的山西，特殊的人文地理造就了这里独特的民间工艺。

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From the historical, natural and ecological point of view, this article researched the course of evolution of the ecological environment in the middle reaches of Yellow River.

从历史、地理、自然、生态的角度，大跨度、高视野、多方位对黄河中游生态环境演变过程进行了探讨。

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There are at least nine physiographic cycles in the middle reaches of the Yellow River during the Late Cenozoic Era.

在晚新生代黄河中游至少存在九个地文期旋回。

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