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BBC跟随着科学家到达阿根廷。在那里，他们挖掘到了一种崭新的恐龙。它们比暴龙还要大，是至今为止所发现的最大的食肉动物。这种捕猎者的头骨比一个人要大，上面还布满了锯齿状的，小刀样的牙齿和长的，强壮的颚肌肉。它们能够以外科手术般的精确度来把它们的猎物切成碎片。
adj. 分居；分开的；不在一起生活的 v. 分开；隔开
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- But over the ages, Pangea broke up into two giant land masses, one in the north and one in the south.
- 随着时代的变迁，盘古大陆分裂为两块巨大的陆地板块，一块向北漂移，一块向南漂移
- Probably around 100 million years ago, South America became separated.
- 大约是在1亿年前，南美洲分离为一个独立的大陆
- And then the faunas, the dinosaurs, the mammals,
- 接着许多动物群落：恐龙、哺乳动物
- the rest of the fauna and flora started to evolve in separate ways, in different ways, in different forms.
- 大部分动物群落和植物群落都开始沿着不同的方向，按照不同的方式独自进化
- After the continent split, different dinosaurs evolved on each continent.
- 陆地板块分离之后，各种恐龙都在自己的大陆上进化
- While, throughout the northern continents, the giant long-necks died out,
- 当北方大陆上所有巨型蜥脚类恐龙正逐渐灭亡时
- down south, something extraordinary was happening.
- 南方大陆却在发生非同寻常的事件
- Here, the huge long-necks not only survived, they just kept growing bigger and bigger.
- 在这里，巨型蜥脚类恐龙不仅活得好好的，而且越长越大
- About 90 million years ago, there were not such animals this big in any other part of the world, but in South America.
- 大约是在9千万年前，世界上其它地方都看不到如此巨大的动物，除了南美洲
- These four-legged plant-eaters, like Argentinosaurus, are a typical South American kind of dinosaur.
- 这些四足植食动物，例如阿根廷龙，是南美洲最典型的恐龙
- In this Cretaceous Period, they were highly successful in the southern hemisphere.
- 在白垩纪时代，它们在南半球相当活跃
- It wasn't just the long-neck plant-eaters that were different on the isolated continent of South America.
- 但在孤立的南美洲大陆上，不仅只是植食蜥脚类恐龙与众不同
- Sealed off from the rest of the world, the vicious tyrannosaurs never reached here.
- 由于和世界上其它地方隔绝，霸王龙不可能来到这里
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