名词
中文翻译：白垩石
同义词：
['limestone', 'chalk']
例句：
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1.The white limestone is a popular building material in this area.
这种白垩石是该地区流行的建筑材料。
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2. The chalk cliffs are a natural wonder that draws many visitors to the beach.
这些石灰岩悬崖是自然奇观，吸引了许多游客来到海滩。
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3.The limestone formations are fascinating because they show evidence of ancient life.
石灰岩的形成令人着迷，因为它们展示了古代生命的遗迹。