Their skulls, pelvises, and hind feet are reptilian.

它们的头骨、骨盆和后脚属于爬行动物。

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The first wrongly assumes that the pterosaurs' hind feet resembled a bat's and could serve as hooks by which the animal could hang in preparation for flight.

第一个（假设）错误地认为翼龙的后脚类似于蝙蝠的后脚，可以作为钩子，用来挂起来准备飞行。

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His hind feet are webbed, somewhat like a duck's.

它的后脚有蹼，有点象鸭子的脚。

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Cats danced on their hind feet, and birds followed them by the dozens, hopping along and cocking their heads from side to side.

NEWYORKER: A Tiny Feast

To find out, he used a special harness which held the rats upright over a treadmill, with their hind feet touching the mill.

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