名词
中文翻译：始祖
同义词：
['ancestor', 'progenitor例句：1. The discovery of the first human ancestors dates back to 40', '000 years ago.（人类最早的祖先发现可以追溯到4万年以前。）']
例句：
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1. The discovery of the first human ancestors dates back to 40,000 years ago.
人类最早的祖先发现可以追溯到4万年以前。
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2.The research on the origins of life has led to the discovery of many ancient ancestor species.
对生命起源的研究已经发现了许多古代的祖先物种。
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3.The DNA sequence of the ancestor species is crucial for understanding the evolution of modern organisms.
祖先物种的DNA序列对于理解现代生物的进化至关重要。