In nature, any kind of soil originates from the evolution of rock.
在自然界,任何类型的土壤都是由岩石变成的。
Soil is a synthesis with extremely complex pattern and evolution process.
土壤是一形态和演化过程都极其复杂的综合体。
Water and soil loss is an important physiognomy evolution course.
水土流失,其实是一种主要的侵蚀地貌演化过程。
Water and soil loss is an important landforms evolution course.
水土流失其实是一种主要的侵蚀地貌演化过程。
Water and soil loss is an important landforms evolution course.
水土流失其实是一种主要的侵蚀地貌演化过程。
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