This bear is three metres long,and it weighs 450 kilos.It can stand up on its back legs because it has very wide feet.It can use its front legs like arms.The polar bear can swim very well.It can swim 120 kilometres out into the water.It catches fish and sea animals for food.It goes into the sea when的翻译：什么意思？中文翻译英文，英文翻译中文，怎么说？

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这熊是三米多长，它重达450 kilos.it可以站在它的后腿，因为它有非常广泛feet.it可以使用武器，北极熊一样的前腿，可以游泳，非常well.it可以游泳，120公里出到water.it捕捉鱼类和海洋动物food.it入海时，它是害怕。