backfill something
They backfilled the trench after laying the pipes.
铺设管道后，他们回填了沟渠。
回填
backfilling — present participle of backfill
补位；用挖出的物料回填洞。；回填发掘单元,以恢复原地面和/或保护该单元并使其可识别为已被发掘。；加入一场已在进行的在线游戏,接替提前离开的玩家。；装填
To refill a hole or excavation with the material dug out of it.
用挖出的物料回填洞。
To refill a hole with the material dug out of it.
回填发掘单元,以恢复原地面和/或保护该单元并使其可识别为已被发掘。
To refill an excavation unit to restore the former ground surface and/or to preserve the unit and make it recognizable as having been excavated.
加入一场已在进行的在线游戏,接替提前离开的玩家。
To enter an online game that's already in progress, replacing a player who left early.
一般现在时
They backfill the trench after laying the pipe.
铺设管道后，他们回填沟渠。
一般过去时
The workers backfilled the excavation yesterday.
工人们昨天回填了挖掘处。
现在完成时
We have already backfilled the hole.
我们已经回填了那个洞。
规则动词，过去式和过去分词加-ed。
The workers backfilled the trench after laying the pipes.
工人们在铺设管道后回填了沟渠。
用法提示：backfilled 是 backfill 的过去式，表示回填的动作已完成。
They backfill the hole with soil to level the ground.
他们用土壤回填坑洞以使地面平整。
用法提示：backfill 是动词原形，用于一般现在时，描述常规操作。
We are backfilling the foundation today.
我们今天正在回填地基。
用法提示：backfilling 是 backfill 的现在分词，用于进行时态。
They backfilled the trench after laying the pipes.
铺设管道后，他们回填了沟渠。
The workers backfilled the excavation with gravel.
工人们用砾石回填了挖掘处。
被动结构常用于施工或考古语境。
The hole was backfilled with the original soil.
这个洞用原来的土回填了。
grammar · medium
易错句子We backfilled the soil into the trench.
正确表达We backfilled the trench with soil.
backfill 的宾语应该是被填满的空间，而不是填充材料。材料应使用介词 with 引出。
grammar · medium
易错句子We did a backfill of the hole.
正确表达We backfilled the hole.
backfill 作为及物动词，直接接宾语，不需要使用名词结构 'do a backfill of'。
refill指再次填充，通常用新的或不同的材料；而backfill特指用挖出的材料回填原处。
infill指填充某个空隙或空间，通常使用新材料，不强调使用原来挖出的材料；而backfill强调用挖出的材料回填。
fill泛指填充任何空间或容器，不指定材料来源或类型；而backfill特指用挖出的材料回填挖出的洞或沟。
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