名词
中文翻译：黑色页岩
同义词：
['black slate', 'black limestone']
例句：
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1.The black shale is rich in minerals that can be used for industrial purposes.
黑色页岩富含可用于工业的矿物。
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2.The geologists were puzzled by the black shale's unusual composition.
地质学家对黑色页岩的不寻常组成感到困惑。
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3. Black shale is a popular material for making bricks and tiles.
黑色页岩是制作砖块和瓷砖的流行材料。