PterosaurMesozoic Era Triassic pterosaur appear on the earth were the first vertebrates to fly,but some suspect that it is only illusory,at best,can only glide in the sky.However,the latest research s...
翼龙的特点 英语翻译翼龙的特点,要用英语哦!想了解一下,看看我看不看的懂!急!快啊!好的有悬赏的啊!