名词
中文翻译：石头
同义词：
['rock', 'stone例句：1. The ancient city is covered with layers of rugged stones.（这个古老的城市被层层的崎岖的石头覆盖。）']
例句：
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1. The ancient city is covered with layers of rugged stones.
这个古老的城市被层层的崎岖的石头覆盖。
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2. He carefully picked up the smooth stone and examined it closely.
他小心翼翼地拿起这块平滑的石头，仔细观察。
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3. Stones are used to make buildings, bridges, and roads.
石头被用来建造建筑物、桥梁和道路。