名词中文翻译
中文翻译：白垩纪
同义词：
['Cretaceous', 'Cretaceous period']
例句：
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1. The Oligocene era was characterized by the appearance of dinosaurs.
白垩纪时期以恐龙的出现为标志。
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2. The discovery of a new species in the Oligocene era has sparked excitement among scientists.
在白垩纪时代发现的新物种引起了科学家的兴奋。
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3. The Oligocene era is often associated with the rise of mammals and the decline ofdinosaurs.
白垩纪时代常常与哺乳动物的崛起和恐龙的衰落联系在一起。