The job entails bringing in layers of soil and sand, then compacting it with heavy machines. It creates a strong foundation for your pavers and makes the patio resistant to erosion.
这项工作必须要铺上几层土和沙子，然后用重机器打压，为铺石打下坚实的地基，使内院能够抗腐蚀。
The job entails bringing in layers of soil and sand, then compacting it with heavy machines. It creates a strong foundation for your pavers and makes the patio resistant to erosion.
这项工作必须要铺上几层土和沙子，然后用重机器打压，为铺石打下坚实的地基，使内院能够抗腐蚀。
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