名词
中文翻译：砂砾
同义词：
['gravel', 'rubble', 'cobblestone']
例句：
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1. The road was so muddy that it was difficult to get through.
这条路太泥泞了，难以通过。
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2. The builders used gravel to level the ground before they started building.
建筑工人使用碎石来平整土地，以便开始建造。
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3. The old house had a lot of gritty walls and floors.
这所老房子有很多粗糙的墙壁和地板。