名词
中文翻译：古生代群
同义词：
['Palaeontological group', 'Palaeontological group']
例句：
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1. The paleozoic era is characterized by the emergence of new species and the evolution of life on Earth.
古生代时代以新物种的出现和地球上生命的发展为特征。
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2.Palaeontologists study fossils to understand the history of life on Earth.
古生物学家研究化石，以了解地球上生命的历程。
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3. The paleozoic era is often referred to as the age of dinosaurs, due to the abundance of dinosaur fossils discovered during that time.
古生代时期通常被称为恐龙时代，因为在这个时期发现了丰富的恐龙化石。