准备改变它的颜色(Preparing to change its colour)

我们正在参观挪威的多夫热尔-桑代尔斯夫热拉国家公园，这只体型虽小但力量强大的北极狐正在为迎接寒冷的北欧冬天而进行着改变。虽然动物有很多方法来适应冬天的天气，比如迁徙、冬眠和长出厚厚的皮毛，但北极狐却没有做到这一点。取而代之的是，每年秋天，它厚厚的皮毛从棕色和灰色变为雪白。狐狸的毛皮起到了伪装的作用，它可以在半年的时间里混入岩石和冻土带中，在变成白色后，另一半时间躲在冰雪中。
原文：
We’re visiting Norway’s Dovrefjell–Sunndalsfjella National Park, where this small but mighty Arctic fox is undergoing changes to prepare for the cold, Nordic winter. While animals have many ways to adapt to winter weather, such as migrating, hibernating, and growing thick fur, the Arctic fox does none of this. Instead, its thick fur coat transitions from brown and gray to a snowy white every autumn. The fox’s pelt acts as a camouflage, allowing it to blend in among the rocks and tundra for half of the year and, after turning white, hide in the snow and ice the other half.
《© Andy Trowbridge/Minden Pictures》