名词
中文翻译：白垩石
同义词：
['limestone', 'chalk']
例句：
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1.The ancient city was built on a limestone hill.
这个古老的城市建在石灰岩的山上。
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2.The chalk cliffs are famous for their beautiful white sands.
石灰岩悬崖以其美丽的白色沙滩而闻名。
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3.The algarite blocks were used in the construction of the bridge.
这些石灰石块被用于桥梁的建设。