The differences between the groups and the similarities within each group made it seem certain to most biologists that the tree of life had only two stems.
类群之间的差异和每个类群内部的相似性使大多数生物学家确信,生命之树只有两个树干。
《生命之树》(5月27号)。
Art is the tree of life. Science is the tree of death.
艺术是生命之树,科学是死亡之树。
Most visitors spent a long time looking at the display called "The Tree of Life."
VOA: special.2009.12.01
It virtually ignores the tree of life until we get to the end of the story And that's important.
它实际上忽略了知识树,我们读完故事便会发现,这一点很重要。
Second of all the motif of guards who block access to the tree of life suggests that no humans have access to immortality and the pursuit of immortality is futile.
第二点,那些阻止人类接近生命树的守卫,暗示着,任何人类关于永生的尝试,最后都是徒劳一场。
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