vt.回填(用挖出的材料重新填回洞穴)
n.(坑洞等的)回填土

原形：backfill第三人称单数：backfills过去式：backfilled过去分词：backfilled现在分词：backfilling

The company decided to backfill the position left by the retiring employee.
公司决定填补退休员工留下的职位。
They used sand to backfill the excavation for stability.
他们用沙子回填挖掘处以增加稳定性。
The archaeologists carefully backfilled the dig site after completing their findings.
考古学家在完成发现后仔细地回填了挖掘地点。
The contractor will need to backfill the trench once the pipeline is installed.
承包商需要在管道安装完成后回填沟槽。
She suggested backfilling the knowledge gap with online courses during her spare time.
她建议利用业余时间通过在线课程填补知识空白。
The miner used a specialized tool to backfill the tunnel as he progressed.
矿工使用了一种专门的工具在他前进时填充隧道。
The construction team will backfill the foundation hole before pouring concrete.
施工团队将在浇筑混凝土之前回填基础坑。
The project manager asked the team to backfill the missing data in the report.
项目经理要求团队在报告中补充遗漏的数据。
After removing the damaged pipe, they backfilled the area with gravel for support.
在移除损坏的管道后，他们在该区域回填砾石以提供支撑。
The gardener used compost to backfill the planting holes for new trees.
园丁用堆肥来回填新树的种植孔。