sea otters have very little fat.in order to adapt to the cold water temperature during the winter period,they have very

问题描述:

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

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.