They have a double coat: a soft, downy undercoat that keeps them dry and warm in cold water and a hard outer coat that helps them repel water.

 
  • 他们有一个双重大衣:柔软,绒短毛这使它们处于干燥和温暖,在寒冷的水和硬外涂层,可以帮助他们击退水。
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