| 单词 | evolutionary ancestors | 
| 释义 | evolutionary ancestors The book begins, unusually, in the deep, misty past of our evolutionary ancestors.  The Times Literary Supplement  Once our evolutionary ancestors, the eukaryotes, started using oxygen as a fuel, they had much more energy, but also suffered a lot more cell damage.  Times, Sunday Times  Fish are our direct evolutionary ancestors.  Retrieved from Wikipedia CC BY-SA 3.0   Therefore, optimal cognitive performance may be found in problems faced by our ancestors, or related to the environments in which our evolutionary ancestors lived.  Retrieved from Wikipedia CC BY-SA 3.0    | 
	
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