The bottom line is pulled, at the foot of the mountain range of the first layer of stone masonry, stone made bottom layer.
所谓拉底，就是在山脚线范围内砌筑第一层山石，即做出垫底的山石层。
The bottom line is pulled, at the foot of the mountain range of the first layer of stone masonry, stone made bottom layer.
所谓拉底，就是在山脚线范围内砌筑第一层山石，即做出垫底的山石层。
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