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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.
隨著時代的變遷，盤古大陸分裂為兩塊巨大的陸地板塊，一塊向北漂移，一塊向南漂移
Probably around 100 million years ago, South America became separated.
大約是在1億年前，南美洲分離為一個獨立的大陸
And then the faunas, the dinosaurs, the mammals,
接著許多動物群落：恐龍、哺乳動物
the rest of the fauna and flora started to evolve in separate ways, in different ways, in different forms.
大部分動物群落和植物群落都開始沿著不同的方向，按照不同的方式獨自進化
After the continent split, different dinosaurs evolved on each continent.
陸地板塊分離之后，各種恐龍都在自己的大陸上進化
While, throughout the northern continents, the giant long-necks died out,
當北方大陸上所有巨型蜥腳類恐龍正逐漸滅亡時
down south, something extraordinary was happening.
南方大陸卻在發生非同尋常的事件
Here, the huge long-necks not only survived, they just kept growing bigger and bigger.
在這里，巨型蜥腳類恐龍不僅活得好好的，而且越長越大
About 90 million years ago, there were not such animals this big in any other part of the world, but in South America.
大約是在9千萬年前，世界上其它地方都看不到如此巨大的動物，除了南美洲
These four-legged plant-eaters, like Argentinosaurus, are a typical South American kind of dinosaur.
這些四足植食動物，例如阿根廷龍，是南美洲最典型的恐龍
In this Cretaceous Period, they were highly successful in the southern hemisphere.
在白堊紀時代，它們在南半球相當活躍
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陸上，不僅只是植食蜥腳類恐龍與眾不同
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絕，霸王龍不可能來到這里
