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Tyrannosaurus rex... When we think about it, we tend to think of the big adult, because that's the skeletons that we see.
霸王龍...當我們想到這種動物時，我們傾向于想到巨大的成年恐龍，因為我們看到的骨架也是如此。
But we know that they didn't hatch that way.
但我們知道它們孵化的時候卻不是那樣。
Once those eggs hatch, we've got an animal that's maybe 3 feet long, maybe weighs about 5 to 8 pounds.
那些蛋剛剛孵化時，幼崽可能只有三英尺長，五到八磅重。
Comparing that to the adults, which might weigh as much as 7 tons and be 40 feet in length, how is this animal gonna be careful to not step on these little beasts, let alone try to protect them and try to make sure that they're going to be cared for?
與重達7噸，長達40英尺的成年霸王龍相比，這種動物是如何做到小心謹慎不誤踩幼崽的，并且盡力保護它們，確保它們受到照料的呢？
There's nothing fearsome about them.
現(xiàn)在的它們一點兒也不可怕。
Sure, maybe someday they'll become a fearsome animal. But at that time, they're just a meatball on legs.
當然，也許有一天它們會成為可怕的動物。但在那時，它們只是長了腿的小肉球。
Wherever this T. Rex looks, he stares danger in the face.
無論這頭霸王龍目光望向何方，他看到的都是無限的危險。
There were crocodiles, medium, large, to gigantic that could plop down, swallow baby T. rexes like maraschino cherries.
經(jīng)常有中等，大型和巨型鱷魚來這里歇腳，它們吞起霸王龍幼崽就像吃酒浸櫻桃一樣。
Clearly, a young T. Rex is very susceptible to be eaten by just about everybody else who's around who likes to eat meat.
顯然，霸王龍幼崽可以被周圍任意食肉動物輕易吞噬。
And danger isn't limited to the ground. Sometimes it dives out of the sky.
而且危險并不局限于地面。有時候危險從天而降。
Quetzalcoatlus, a 180 kilograms flying carnivorous reptile, circles, waiting for just the right moment to strike.
披羽蛇翼龍，一種重達一百八十千克的飛行肉食爬行動物在空中盤旋，等待合適的出手時機。
Quetzalcoatlus would make all other animals in the Late Cretaceous stare.
披羽蛇翼龍能讓白堊紀晚期的其他動物汗毛倒立。
With a 42-foot wing span, they could shut out the sun.
憑借著42英尺的翼展它們能遮天蔽日。
One tool that makes this flying reptile so effective is a highly advanced eyeball.
這種空中爬行動物的一大利器就是高度進化的眼球。
Its eyes are built like a hawk's and are able to see with four times the clarity of the human eye.
它的眼睛結(jié)構(gòu)酷似鷹眼，視覺清晰度是人眼的四倍。
And with a retina over one centimeters wide containing over a billion light receptors, this is a reptile that sees the world in high-definition.
而在它們一厘米寬的視網(wǎng)膜上包含了十億個感光細胞，在這只爬行動物眼中，世界是高清的。
There probably were minimum Quetzalcoatlus that were dare to try to grab a baby Tyrannosaurus Rex.
很可能有個別披羽蛇翼龍敢于捕食霸王龍幼崽。
'Cause it's paws could probably manage it.
因為它的爪子足以做到這一點。
You see a stork on the Nile today eating a baby crocodile.
在今天的尼羅河畔你都能看見鸛捕食鱷魚幼崽。
You can imagine in your mind Quetzalcoatlus eating a baby tyrannosaur 65 million years ago.
你也就可以想象6500萬年前，披羽蛇翼龍捕食霸王龍幼崽的景象。
