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By using cutting edge technology and every available piece of fossil evidence, 60-million-year-old mysteries have forensically decoded. 通过最新的科技和每一块相关的化石证据，六千万年的谜团水落石出。 From their ability t
英语第1级听力-English Level 1
Majungasaurus's arm is incredibly short. 玛君龙的前肢不可思议地短小。 It's got an upper arm bone, but its forearm has shrunken, so it's basically a wrist. 它有上臂骨不过前臂萎缩，基本就是一个腕子。 From the elbow to
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Paleontologists believe that this actually help her hone her fighting skills. 古生物学家们相信这能帮助雌性磨练搏斗技能。 A full grown Majungasaurus is pretty much able to take care of itself,完全成年的玛君龙基本能保护自
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The K-T boundary marks the end of the age of dinosaurs, and the beginning of the age of mammals. KT界限层标志着恐龙时代的终点和哺乳动物时代的开端。 But does the K-T boundary really signify the absolute end of all dinosaurs? 不过
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Maybe this juvenile was killed by a member of its own family. 也许这头幼龙是被自家的成员杀死的。 The tooth design of Tyrannosaurus Rex is very distinctive and therefore leaves very distinctive marks on the bones. 雷克斯暴龙的牙齿
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T-Rex, by using cutting-edge technology, some of its fossilized secrets have been scientifically decoded. 霸王龙，通过前沿科技，其化石里的一些秘密已经被科学界解开了。 It had eagle-eye vision, could smell prey from 3 mile
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There's nothing in the world today that looks like a Stegosaurus. 如今地球上没有什么动物长得和剑龙相似。 And it just was so peculiar with that long cone-shaped head and this big curved back and these short front legs and long back
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In some ways, perhaps modern earth moving machinery is a better analogy for the type of power they have. 在一定程度上，用现代土方机械可能更能形容它们所有的力量。 If that's not enough of a deterrent and you're still coming
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Tenontosaurus is a very sturdy, strongly built animal. 腱龙是一种体格强健结实的动物。 The bones are very large and those bones were clothed with relatively powerful muscles to carry the large animal around. 它的骨头很大，而且上
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In spite of the fact that they look like they're more or less defensive, they have arms and legs and strength and that...that tail looks pretty wicked actually overall. 看起来它们还是或多或少有一定的防御能力，它们的前肢和腿力
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CAT scan evidence would also reveal another clue. CT扫描也揭示了另一条线索。 The Raptors at this site were incredibly agile. 在这一战场上的迅猛龙惊人地敏捷。 We have a sense that this animal could really move around with a
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As he moves in for the kill, Nanotyrannus feels a horrible pain in his left leg. 在它向前想要发动致命一击时，矮暴龙感到左腿上钻心地疼。 He looks down and there is the second juvenile T-Rex. 它向下看到另一头幼龙。
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The Brygmophyseter uses its flipper to steer, it is literally rudderless without it. 四贺鲸用它的鳍肢来控制方向，没有它真的就没有方向了。 There are 44 teeth in its jaws. 它的口中有四十四颗牙齿。 The front teeth a
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As investigators studied the large serrated teeth of the giant shark, they discovered the massive power of its bite - a force of 20 tons. 在调查者研究这些巨鲨的大型锯齿状牙齿时，他们发现了它巨大的咬合力可达二十吨。
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They moved with their front legs more oriented inward instead of like this, like we see in bears today, and that would have given them a more efficient gate. 当它们进行移动时，前腿更向内靠，而不是像我们如今看到的熊类这样，
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With food scarce, both dinosaurs must also conserve energy. 因为食物匮乏，两头恐龙都必须要保存体能。 The slow moving Gastonia could go a week without eating. 缓慢移动的加斯顿龙一周不吃东西没有问题。 The faster
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At the base of the tail, where it connects to the hips, Gastonia had these sharp triangular shaped plates made of bone. 在它尾巴基部，连接髋部的位置，加斯顿龙有这些锋利的三角形的骨质护甲。 In and among themselves, th
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The Utahraptor had relatively thin arms, so it couldn't simply flip the heavy Gastonia over to get to its underbelly. 犹他盗龙的前肢比较细，所以它没法把沉重的加斯顿龙翻过来直击它的下腹部。 In nature today, predatory
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Oversized teeth, sharp claws, speed and gargantuan size led experts to first believe that this was a predator with few adversaries. 超大的牙齿、锋利的爪子、速度还有其巨大的体型，这些让专家们开始时认为这种掠食者没
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The Ice Age had come to an end.And global warming had thrown the eco-system into utter chaos. 冰期已近尾声。全球变暖让生态系统彻底混乱。 Animals were forced to adapt, migrate or die. 动物们被迫适应、迁徙或死亡。 Mas
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