The Arctic fox can survive some of the most extreme temperatures on the planet with its thick fur and low surface-area-to-volume ratio.
北极狐拥有厚厚的皮毛，身体的散热面积较小。即使在一些极端的温度下，也能顽强地生存。
It was about three feet tall, with a thick fur coat and brownish-gray hair fanned out around its black muzzle like a Victorian gentleman's cheek whiskers.
这种猴子高一米左右，一身厚厚的皮毛，黑色的鼻口处有几簇灰褐色的毛发呈扇形散开，看上去就如同维多利亚时代绅士们留的颊须一般。“我的天！”
Night comes and goes. Dog's thick fur keeps him warm. But Dog is wet and tired and hungry. And he is scared. Don't be scared, Dog!
天黑了，天又亮了。小狗厚实的皮毛保持着它的体温。可是它又湿、又累、又饿，它还很害怕。别怕，小狗！
Night comes and goes. Dog's thick fur keeps him warm. But Dog is wet and tired and hungry. And he is scared. Don't be scared, Dog!
天黑了，天又亮了。小狗厚实的皮毛保持着它的体温。可是它又湿、又累、又饿，它还很害怕。别怕，小狗！
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