海豹皮

例句：

1. 1. The polar bear's thick fur is a crucial part ofits survival strategy.
   北极熊厚厚的皮毛是其生存策略的关键部分。
2. 2. The sealskin is used in traditional clothing and asa material for making bags.
   海豹皮用于传统服装和制作袋子的材料。
3. 3. Thehunters are trying to catch the rareanimal for its valuable skin.
   猎人试图捕捉这种稀有动物，以获取其珍贵的皮毛。