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I really worry about our oceans. Not many people understand how important the oceans are. Every day we hear stories about the rainforests and the ice caps, but we rarely hear about the oceans. They form most of the Earths surface and most of the worl

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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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Hello, again, and welcome. Im Jim Tedder in Washington. Our program today is all about animals. First we will hear about a group of people who are working to save the African elephant from poachers. New money and new ideas are involved in the project

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