名词
中文翻译：白垩
同义词：
['limestone', 'chalk']
例句：
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1.The white marble statue was a masterpiece of ancient Greek art.
这座白色大理石雕像是古希腊艺术的杰作。
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2. The chalk marks on the blackboard are difficult to see in the dim light.
黑板上的粉笔痕迹在昏暗的光线下难以辨认。
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3.The limestone cliffs along the coast are a popular destination for hikers and tourists.
沿海的石灰岩悬崖是徒步旅行者和游客的热门目的地。