求翻译：路基高度过小则不能减小路面传至下伏冻土层的热量，过大则易使路基本体形成融土核和阴阳坡效应，因此是影响路基下伏多年冻土层稳定性重要因素。是什么意思？

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The roadbed crosses highly slightly cannot reduce the road surface to pass on to the last ten days of the dog-day period frozen earth level quantity of heat, oversized then easy to cause the roadbed main body to form melts the earth nuclear and the cloudy sunny slope effect, therefore affects the ro

Spend small you cannot reduce the high road to the underlying permafrost in heat, too much easy to make bulk forming and thawing soil in subgrade of nuclear and slope effect of yin and Yang, and therefore are important factors affecting the stability of permafrost subgrade under.

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