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汉语拼音：běi jí xióng

也叫白熊。哺乳动物。体长可达2.8米，毛白色带黄。生活在北极区内，善于游泳。冬季主食海豹、海鸟和鱼类，夏季主食植物。

1. 即白熊。哺乳动物。毛白色带黄，鼻子和爪黑色，善游泳。广布于北极区内，以耐寒著称。

• The summit is shrouded in freezing mist, and my wife is concerned we might have a close encounter of the scary kind with a polar bear.

  山顶上被冻雾所笼罩，我妻子担心我们会与北极熊不期而遇。

• must be a polar bear out there looking for a little bit of trouble, huh?

  看来外面有只北极熊啊难道它还想找点麻烦对吗？。

• According to a news story, if global warming continues, in 20 years the only chance we'll have to see a polar bear is in a zoo.

  按照一则新闻的说法，如果全球变暖持续下去，在20年内我们能够看到北极熊的唯一的机会就是在动物园了。

• The truth was that polar bears are ferocious wild animals and can become desperate for food in the ice-free summer months.

  事实上北极熊是凶猛的野生动物，在无冰的夏季，北极熊会因难以觅食而变得饥不择食。

• The German polar bear had an early morning outing, preparing for her public debut next month.

  这只德国北极熊早上已经出来散过步了，它正在为它下月举行的首次公众登台表演做准备。

• A stranded female polar bear and mother of two cubs waits for the sea ice to return to be able to hunt.

  滞留的雌性北极熊-两个小熊的母亲正在等待可以返回的海冰。

• There was so much ice in 1992 , the following year, that there was a bumper crop of polar bear cubs who were known as the Pinatubo cubs .

  第二年1992年，很多的冰才使北极熊幼仔丰产，它们取名皮纳图博北极熊宝宝。

• Which, for the great majority of the time that polar bears have been polar bears, has been a reasonable assumption.

  绝大多数时候北极熊就是这个样子的，这看起来是一个合理的假设。

• Rogers saw something most of his counterparts did not . " I 've never had a polar bear moment , " he says .

  罗杰斯看到了大部分同行都没看到的机会。他说：“我从来不是北极熊。”