stabilization by compaction

例句：

1. 1. The soil was stabilized by compaction to improve drainage.
   土壤通过压实稳定来改善排水。
2. 2. The engineer used the compaction method to stabilize the foundation.
   工程师使用压实方法来稳定地基。
3. 3. The construction crew applied a layer of sand before compacting the soil.
   施工队在压实土壤之前铺上一层沙。