名词
中文翻译：Unknown
同义词：
['stone', 'pebble', 'gravel例句：1. The riverbank is covered in smooth stones.（河岸边覆盖着光滑的石头。）2. The old house was built on a pebble-lined foundation.（那座旧房子建在卵石铺成的地基上。）3. The gravel road was uneven and treacherous.（砾石路凹凸不平且危险。）']
例句：
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2.
尤指
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1. The riverbank is covered in smooth stones.
河岸边覆盖着光滑的石头。
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2. The old house was built on a pebble-lined foundation.
那座旧房子建在卵石铺成的地基上。
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3. The gravel road was uneven and treacherous.
砾石路凹凸不平且危险。