名词
中文翻译：变质时代
同义词：
['metamorphic period', "metamorphic era例句：1. The study of the metamorphic epoch provides insights into the Earth's history.（研究变质时代有助于我们了解地球的历史。）2. The metamorphic epoch is characterized by significant changes in mineral composition and physical properties.（变质时代的特点是矿物组成和物理性质发生了显著变化。）"]
例句：
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1. The study of the metamorphic epoch provides insights into the Earth's history.
研究变质时代有助于我们了解地球的历史。
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2. The metamorphic epoch is characterized by significant changes in mineral composition and physical properties.
变质时代的特点是矿物组成和物理性质发生了显著变化。
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3. The metamorphic epoch is often associated with the formation of new rocks and minerals.
变质时代通常与新岩石和矿物的形成有关。