翼龙的整体结构和比例与鸟类和蝙蝠都很相似。
The pterosaurs resembled both birds and bats in their overall structure and proportions.
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。
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.
飞行能力一共有四次的进化突破：昆虫是三亿年前进化过来的，翼龙是二亿三千万年前进化的，鸟类是一亿万千万年前进化的，而蝙蝠是五千万年前进化的。
It has evolved only four times: among the insects about 300m years ago, the pterosaurs (230m), the birds (150m) and the bats (50m).
另外，翼龙的腿和翅膀要比任何可以相提并论的鸟类或蝙蝠都要强壮，这一点强化了它们可以急速腾空的观点。
Moreover, the pterosaurs' legs and wings were stronger than those of any comparable bird or bat, reinforcing the idea that they could leap rapidly into the air.
空中处处飞翔着蝙蝠，为数不多的贵族穿着黑披风，骑着龙，自最华贵的建筑飞出。
Bats fly in the air everywhere, a few aristocrats wearing black ponchos, riding a dragon, since most luxurious fly out of the building.
空中处处飞翔着蝙蝠，为数不多的贵族穿着黑披风，骑着龙，自最华贵的建筑飞出。
Bats fly in the air everywhere, a few aristocrats wearing black ponchos, riding a dragon, since most luxurious fly out of the building.
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