名词
中文翻译：Unknown
同义词：
['Gypsum', 'Gypsumite', 'Gypsumite rock']
例句：
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1.The earthy gypsum was used to make plaster in ancient times.
古代用土灰石膏制作石膏。
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2.The mineral gypsum is often found in limestone deposits.
矿物石膏通常存在于石灰石矿床中。
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3.The gypsum mine is located in the mountains of central China.
石膏矿位于中国中部的山区。