用濃密的內層絨毛防止熱量散失 (Dense underfur insulates)

#保護免受溫度危害
#Protect from temperature

馴鹿的皮毛在濃密內層絨毛的幫助下捕獲空氣並隔絕極地的寒冷
(The coat of a reindeer insulates against polar cold with the help of dense underfur that traps air.)

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