三峡库区属于南方高植被覆盖区域，岩石上部覆盖着较厚的土壤和茂密的植被，因此岩性分析比较困难，尚无成熟的方法可循。
Three Gorges is the south area in which there covers thick soil and flourish vegetation on the top of the rocks, and the lithology analysis is very difficult.
泉水上部的石块被绿色生物膜覆盖，它通过阳光和硫化物自然的发生化学反应生存。
The top of the springs' rocks are covered with green biofilms, which use both sunlight and sulfide-naturally occurring chemicals from the springs-to survive.
西伯利亚Malta的圆形帐篷，上部由兽皮覆盖，下部由石头固定。
Circular tents from Malta, Siberia. These animal hide covered structures were bolstered with stones at the base.
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