名词
中文翻译：磷灰石
同义词：
['pyrolusite', 'phosphatic limestone', 'calcium pyrophosphate']
例句：
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1. Theancient tombstones are made of pyritobitumen.
古老的墓碑是用磷灰石制成的。
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2. The scientist discovered a new method for extracting pyritobitumen from the earth.
科学家发现了一种从地下提取磷灰石的新方法。
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3.The pyritobitumen was used as an additive in the construction of buildings.
磷灰石被用作建筑施工的添加剂。