compaction by double action

例句：

1. 1. Thesoil was compacted by heavy machinery.
   土壤被重型机械压实了。
2. 2. Thecompany's profits havebeen significantly reduced due to therecent economic downturn.
   由于最近的经济衰退，公司的盈利已经大幅减少。
3. 3. Theconstruction crew worked tirelessly to ensure theproject was completed on time.
   施工队努力工作以确保项目按时完成。