名词
中文翻译：前寒武纪同义词
同义词：
['Proterozoic era', 'Paleozoic era']
例句：
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1. The study of the pre-Cambrian period has shed light on the origins of life on Earth.
对前寒武纪的研究揭示了地球上生命起源的线索。
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2. The discovery of ancient fossils in the Precambrian era has been a major breakthrough in our understanding of Earth's history.
在前寒武纪时期发现的古代化石是对我们地球历史理解的重大突破。
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3. The pre-Cambrian era is often referred to as the "Dark Ages" of Earth's history because of its lack of known life forms.
前寒武纪时期通常被称为地球历史的“黑暗时代”，因为这一时期没有已知的生命形式。