砌砖之前，泥瓦匠仔细地把沙基层夯实，确保平整。
Before laying the bricks, the mason carefully tamped the sand base to ensure it was level.
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解释
形容为建筑或铺设做准备，将基底材料压实压平。
Before laying the bricks, the mason carefully tamped the sand base to ensure it was level.
形容为建筑或铺设做准备，将基底材料压实压平。