it's hard to imagine they once dominated our planet. 很难想象它们曾主宰我们的星球
although they are not all as terrifying as their ancestors. 虽然它们并非都像祖先那般可怕
They have no defense against this new type of reptile... 面对这种新型爬行动物 它们毫无办法
They emerged into an almost empty world 它们出现在 一个几乎空无一物的世界中
so they don't shrivel in the baking sun. 所以不会在烈日曝晒下干瘪
And they still dominate our deserts today. 如今它们依然主宰着我们的沙漠
they made up three-quarters of all vertebrate life on land, 它们占据了陆地脊椎动物的四分之三
But they weren't the only animal survivors. 但它们不是仅存的幸存动物