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sea otters have very little fat.in order to adapt to the cold water temperature during the winter period,they have very dense furred skin,which acts as great insulator.4546
人气:107 ℃ 时间:2020-04-24 20:50:25
解答
海獭有很少的脂肪.为抵御冬季寒冷的水温,他们皮肤上长着稠密的软毛,而这种软毛又具有很强的保暖作用.
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