backfill + object
动词短语，后接宾语
We need to backfill the hole.
我们需要回填这个洞。
前情交代；补叙；用于回填发掘的材料。；为当前情节提供历史或背景的早期故事内容。；装填；回填
Material used to refill an excavation, such as soil or gravel.
用于回填发掘的材料。
The material that has been used to refill an excavation.
为当前情节提供历史或背景的早期故事内容。
Material in a story set earlier in the past, providing history or context for the current action.
The construction crew used gravel as backfill for the trench.
施工队用碎石作为沟渠的回填材料。
用法提示：backfill作为名词，表示回填材料。
After the pipe was laid, the backfill was compacted to prevent settling.
管道铺设后，回填土被压实以防止沉降。
用法提示：backfill作为名词，指回填的土壤或材料。
The backfill around the foundation must be made of a well-draining material.
地基周围的回填材料必须由排水良好的材料制成。
用法提示：backfill作为名词，指用于回填的物质。
动词短语，后接宾语
We need to backfill the hole.
我们需要回填这个洞。
动词短语，后接宾语和材料
They backfilled the trench with sand.
他们用沙子回填了沟渠。
名词，指回填用的材料
The backfill must be compacted properly.
回填材料必须适当压实。
名词，指回填这一动作
The backfill of the foundation took two days.
地基的回填花了两天时间。
grammar · medium
易错句子They backfilled after digging the hole.
正确表达They backfilled the hole after digging.
backfill 是及物动词，后面必须跟宾语，不能单独使用。
grammar · medium
易错句子We need to backfill the important files.
正确表达We need to back up the important files.
backfill 意为回填，而 backup 才是备份，两者意思不同。
backfill指回填，backfire指计划等产生事与愿违的结果。
backfill是回填，backflip是体操动作后空翻。
回填材料
The contractor ordered gravel as backfill material.
承包商订购了砾石作为回填材料。
回填土
Use native backfill soil to fill the trench.
使用原生回填土填充沟槽。
回填作业
The backfill operation was completed ahead of schedule.
回填作业提前完成。
用砾石回填
They decided to backfill with gravel for better drainage.
他们决定用砾石回填以改善排水。
墙后回填
It is important to compact the backfill behind the wall.
墙后回填必须压实。
回填开挖
After the pipeline was laid, the backfill excavation began.
管道铺设后，开始回填开挖。
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