某种植物或动物等 no longer in existence 不再存在的;已灭绝的;绝种的 an extinct species 已灭绝的物种 to become extinct 绝种 ..
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在生物进化框架中，体质人类学和现存的及已灭绝的物种有密切关系。
In the framework of biological evolution, physical anthropology and the existing and extinct species closely related.
许多业已灭绝的物种，或许大多数已灭绝的物种，是由于自然原因而非人类干扰的原因而灭绝，这一点肯定无人质疑。
Certainly no one can argue that many, and perhaps most, extinct species became extinct naturally rather than due to human interference.
即使新的种群属于不同物种，它也可以大致填补已灭绝种群空出的生态位，保持食物网的完整。
Even if the new population is of a different species, it can approximately fill the niche vacated by the extinct population and keep the food web intact.
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