名词
中文翻译：硬岩
同义词：
['hard rock', 'coarse rock例句：1. The metamorphic rocks are very interesting to study because they contain minerals that have undergone significant changes in temperature and pressure.（变质岩石非常有趣，因为它们含有在温度和压力发生显著变化后形成的矿物。）']
例句：
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1. The metamorphic rocks are very interesting to study because they contain minerals that have undergone significant changes in temperature and pressure.
变质岩石非常有趣，因为它们含有在温度和压力发生显著变化后形成的矿物。
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2.The metamorphic rocks were formed by the process of metamorphism, which is a type of mineral transformation.
变质岩石是通过变质作用形成的，这是一种矿物转化的类型。
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3.The metamorphic rocks are often used as building materials due to their hardness and durability.
由于其硬度和耐用性，变质岩石常被用作建筑材料。