名词
中文翻译：砾石板
同义词：
['gravel slab', 'gravel slab', 'gravel pavement']
例句：
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1. The builderslaid down a gravel board for the new road.
建筑者铺设了新的砾石板道路。
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2. The old house had been replaced with a gravel board walkway.
旧房子被换成了砾石板人行道。
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3.The engineer used a gravel board to reinforce the foundation of the building.
工程师使用砾石板加固建筑物的基础。