名词
中文翻译：Unknown
同义词：
['pebble', 'cobblestone', 'slate']
例句：
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1. The path is paved with small pebbles.
这条小路铺着小石子。
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2. The cobblestone road was worn smooth by many years of foot traffic.
这条鹅卵石路被多年的行人踩得光滑了。
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3. The slate roof of the house has a unique texture.
这所房子的石屋屋顶有着独特的纹理。