名词
中文翻译：红土
同义词：
['red earth', 'hematite']
例句：
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1. The red earth is rich in iron and can be used for building materials.
红土富含铁质，可用于建筑材料。
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2. Hematite is a mineral that is found in the Earth's crust.
赤铁矿是一种存在于地壳中的矿物。
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3. The red earth was used as a pigment in ancient paintings.
红土在古代绘画中被用作颜料。