N the layer of a soil profile immediately below the B horizon and above the bedrock, composed of weathered rock little affected by soil-forming processes 母质层
So for 88 days, the Sun is constantly above the horizon and surface temperatures soar to nearly 900 degrees F (482-degrees C).
所以有88天的时间太阳一直处于地平线上。表面温度上身到近900华氏度（合折482摄氏度）。
Horizon C is relatively unweathered parent material form which the mineral components of the above layers are derived.
C 水平层是相对未风化的母质土，其它层的矿物都源于此。
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