【美国国家地理】：宽吻海豚

　　英文版本

　　Bottlenose dolphins are charming stars in animal shows. Their curved mouths give them a friendly smile and appearance. Dolphins are thought to be some of the smallest animals on Earth. They can learn to perform many tricks. Soon after its birth, each dolphin has own unique whistle. Just like human names, the whistles can used for telling dolphins apart.

　　Bottlenose dolphins are social animals. They mostly travel in groups. They communicate in many different ways. For example, through squeaks and whistles, the dolphins can send messages to one another. They can also use body language. They slap their tails on the surface of the water, blow bubbles or leap high in the air.

　　These sea mammals feed on fish and shrimp. They hunt using echoes to find their food in the sea. The dolphins produce clicking sounds. The sounds hit objects in the water and the echoes come back the same way. The echoes tell the dolphins the shape, size and location of the objects.

　　Well, young explorers, thanks for listening! See you next time.

　　中文版本

　　海豚是水族馆表演里的闪耀明星。它们的嘴巴弯弯的，看上去就像在友好地微笑。海豚是这个世界上特别聪明的动物之一。能学会很多小把戏。每只海豚宝宝从出生起就会拥有自己独特的哨音。就像人类的名字，海豚之间可以通过各自独一无二的声音来识别彼此。

　　宽吻海豚喜欢社交。它们大多都是结伴出游。它们以不同的方式进行交流。例如，海豚可以通过叫声和哨音将信息传达给彼此。也会使用肢体语言。它们会用尾巴拍打海面玩浪花，还会吹泡泡，或是在海面之上高高跃起。

　　这些海里生活的哺乳动物以鱼虾为食。通过回声来寻找食物。它会发出咔哒声。当咔哒声碰到海里的物体时就会反射回来。海豚就能根据回声判断出物体的形状、体积和位置。

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