005｜百科知识 : 北极的动物如何熬过严冬？

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How do animals survive the Arctic winter?

In winter, temperatures in the Arctic drop to -50℃, so polar animals grow a thick winter coat to keep them warm. The Arctic fox even has fur on the bottom of its feet and uses its bushy tail as a blanket.

The Arctic fox can hear small animals moving in their underground  burrow. It pounces to break through the snow, then grabs its prey.

参考译文：北极的动物如何挨过寒冬？

冬天，北极的气温降至零下50度，极地的动物们为了保暖会长出一层厚厚的“冬衣”。北极狐甚至连脚底都有皮毛，还会拿自己密实的大尾巴当毯子用。

北极狐能听到小动物在地下洞穴里活动的声音。它会猛地扑透雪地，擒获猎物。

Why aren't polar bears white?
If you plucked a few hairs from a polar bear, you would find they are colourless. Like snow and ice, they are translucent – light passes through them, but they look white to us.

Beneath its thick coat, the polar bear has black skin, which absorbs heat from the sun and keeps the bear warm.

参考译文：为什么北极熊不是白色的？

如果拔些北极熊的毛发来观察，你会发现它们是无色的。就像透亮的冰和雪，光都能穿过去，但我们看起来却是白色的。

北极熊厚厚的毛发之下是黑黝黝的皮肤，会吸收阳光的热量，让北极熊保持温暖。