名词
中文翻译：古生代的
同义词：
['Paleozoic', 'Paleozoic era']
例句：
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1.The Eocene period is characterized by the appearance of dinosaurs and the development of marine life.
在二叠纪时期，恐龙出现和海洋生物的发展。
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2. The fossil record from the Eocene shows that the Earth's climate was much colder than today.
来自二叠纪的化石记录显示，地球的气候比今天冷得多。
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3. The Eocene-Oligocene boundary marks the end of the Cretaceous period and the beginning of the Paleogene era.
二叠纪-三叠纪边界标志着白垩纪时期的结束和古生代时代的开始。