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来源:雅诚德英语网
Paleontologists are now carefully studying the closest theropod relatives of birds for clues to how this transition occurred.
古生物学家正在对鸟类的兽脚亚目最近亲进行仔细研究,以寻找这种转化的线索。
Paleontologists are now carefully studying the closest theropod relatives of birds for clues to how this transition occurred.
古生物学家正在对鸟类的兽脚亚目最近亲进行仔细研究,以寻找这种转化的线索。