照片中，以农田为地基的建筑后面，数公顷被犁过的土壤像沙漠一样贫瘠。
In the photo, behind the farmstead buildings, stretch acres and acres of soil as tilled and bare as a desert.
水首先渗入到这个地区岩石地基下的土壤中，使其变得不稳定并且容易发生滑坡。
Water first seeps into the loose soil at the base of the area's rocky cliffs, destabilizing the land and making it prone to slides.
过去该地区曾经历过中度地震活动，唐山市的地基不稳定，土壤为冲积土质。
Although the region had experienced moderate seismic activity in the past, the city of Tangshan has been built on unstable, alluvial soil.
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