名词
中文翻译：磷石
同义词：
['pyroxene', 'silica-phosphate rock']
例句：
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1.The pyrostal in the stone was so rare that it was worth a fortune.
那块石头里的磷石如此罕见，价值连城。
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2. The pyrostal is used in the production of glass and ceramics.
磷石用于制造玻璃和陶瓷。
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3.The pyrostal mine is one of the largest in the world.
这个磷石矿是世界上最大的之一。