Scientists studying the physiology of dinosaurs have long debated whether dinosaurs were warm- or cold-blooded.
长期以来，研究恐龙生理学的科学家们一直在争论恐龙到底是温血动物还是冷血动物。
One way to fill the gap and to deduce dinosaurs' respiratory physiology is to examine the lungs of their closest living descendants — birds.
研究恐龙类的近亲鸟类，是填补他们研究呼吸生理机能空白的方法之一。
One way to fill the gap and to deduce dinosaurs' respiratory physiology is to examine the lungs of their closest living descendants — birds.
研究恐龙类的近亲鸟类，是填补他们研究呼吸生理机能空白的方法之一。
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