Scientists had assumed that the dramatic alterations in beak shape, height, width and strength would require the accumulation of many chance mutations in many different genes.
科学家们曾经以为，这些喙在形状、高度、宽度和强度上的明显的变化，可能需要很多种不同基因经过很多偶然变异的慢慢积累。
He's got a body shape, feathers, and beak of an ostrich, the speed of some of the fastest lizards, and the height to rival T-rex.
它有鸵鸟一样的身形、羽毛和长嘴，最为迅速的蜥蜴的速度，和霸王龙一样的身高。
He's got a body shape, feathers, and beak of an ostrich, the speed of some of the fastest lizards, and the height to rival T-rex.
它有鸵鸟一样的身形、羽毛和长嘴，最为迅速的蜥蜴的速度，和霸王龙一样的身高。
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