名词
中文翻译：棕色粘土
同义词：
['brown clay', 'red clay', 'ironstone']
例句：
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1.The brown clay has been used as a building material for centuries.
这种棕色粘土被用作建筑材料几个世纪了。
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2. The ironstone is famous for its beautiful patterns and colors.
这种铁石以其美丽的图案和颜色而闻名。
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3. The builders used the brown clay to build the foundation of the house.
建筑师们使用棕色粘土来建造房子的基础。