动词短语
中文翻译：压实回填
同义词：
['compact', 'pack', 'level']
例句：
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1.The engineer carefully tamped the backfill to ensure stability.
工程师小心翼翼地压实回填以确保稳定性。
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2. After the construction was completed, they had to compact the backfill to make room for the new road.
施工完成后，他们不得不压实回填以便为新路腾出空间。
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3. The excavator operator used a compactor to level the backfill before starting work on the next section.
挖掘机操作员使用一台压实机在开始工作前平整回填。