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Every few months this program will feature an animal which has caught the eye of the world's public to become a favorite or
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Transcript: Interviewer: Good morning. Today were going to talk about theme parks and were going to hear from Andy Wells who has written a guide to theme parks around the world. Welcome to the programme, Andy. Andy: Hi, its good to be here. Interview
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Although these were not considered giant predators, they were still packed with muscle. 虽然不是巨型掠食者，它们也相当壮实。 These would've had some bearing on their speed and agility. 这对它们的速度和灵活性会有影响。
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Giant long-necked Sauropods were able to browse at treetop levels, while other plant eating dinosaurs were perfectly adapted to take advantage of the low-growing vegetation. 巨大的长颈蜥脚类恐龙能够吃树顶上的嫩枝，而其它的植食
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How big an asteroid would it take to distribute this much Iridium around the entire planet? 到底要多大的小行星才能将这么多铱散布在整个星球上？ And they come up with a very rough number of something on the order of ten kilomet
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5 minutes to impact. 距离撞击五分钟。 The sky is now illuminated by the glowing orb as it draws closer. 随着小行星的靠近，天空现在被耀眼的火球照亮。 The asteroid begins to heat up as it comes into contact with our atmosp
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When Witmer studied the skull, he saw that there were serrated ridges in the teeth. 维特莫研究其颅骨时，看到牙齿里有锯齿状的脊状隆起。 The ridges are remarkably similar to those of another animal with a deadly bite, a Komodo
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In the summer of 1998, a group of amateur paleontologists were conducting a routine dig, when they made a stunning discovery1998年的夏天，一组业余古生物爱好者在进行一次例行挖掘时做出了一个惊人发现，the fossilized re
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The horn of the Pachyrhinosaurus could have been as long as a meter. 肿鼻角龙的角可能有一米长。 Many paleontologists think it was shaped like a rhinoceros horn, but much larger. 很多古生物学家们认为它的形状和犀牛角相仿，
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The fact that Pachyrhinosaurus is found in so many different areas suggests that these dinosaurs had a remarkable ability to adapt to a variety of different environments. 肿鼻角龙在那么多不同的地方被发现，说明这种恐龙对不同环
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Scientists quickly discovered that these dinosaurs had all died at the same time. 科学家们很快发现了这些恐龙全部是同时死亡的。 Finding the remains in one place could mean only one thing. 在同一地点发现的遗骸只能说明一
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A prehistoric watering hole. 一处史前水坑。 By using cutting edge technology, some of its fossilized secrets are scientifically decoded. 通过利用前沿科技，它的一些化石秘密如今已经被科学地揭开了。 Multiple species,
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Tenontosaurus was bigger and certainly heavier. 腱龙体型庞大且笨重。 Tenontosaurus didn't necessarily make a mistake. 它不一定是犯了致命的错误。 It was numbers that took him down. 它是败给了庞大的数量。 One dinosaur
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Of the tens of thousands of fossil remains, only a single Ceratosaurus was found. 在数千具化石遗骸中只有一具属于角鼻龙。 This mid-sized predator did not have the power to cause the damage to the tens of thousands of bones. 这数万块
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A closer inspection of the Tenontosaurus revealed cuts and slashes in the bone, made by the teeth of Raptors. 仔细检查腱龙骨骼能发现迅猛龙造成的伤口和齿痕。 Proof that there were more than four Raptors in this pack. 这说明这群
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Because Tenontosaurus has that long tail, it's a clear sign that it is designed to be more of a weapon. 腱龙长长的尾巴很明显是非同寻常的武器。 So it's got a great way to defend itself. 所以是保障自身安全的好办法。 Tha
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Then, Ostrum's crew made another discovery - lying next to the Raptor was a second skeleton. 紧接着，奥斯特伦姆的团队有了另一个发现，在迅猛龙旁边还有第二具骸骨。 Two Raptors, side by side. 两头迅猛龙紧挨着。
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One of the things that tells us that it's actually a more primitive dinosaur. 这一点说明它是一种较为原始的恐龙。 Now, the third and forth fingers are very small, probably not very functionally effective. 它的第三和第四只手指很
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The landscape of modern Utah scarcely resembles the landscape of 156 million years ago, when Allosaurus ruled supreme, there were fewer mountains. 现代犹他州的地形跟一亿五千六百万年前大相径庭，在异特龙称霸之时，那里没
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In his book Cosmos, the late scientist Carl Sagan talks about the way in which the earth is regularly struck by material from outer space. These collisions with space debris can be minoras in a shooting star on a summer nightor amazingly destructive,
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