#保護免受溫度危害
#Protect from temperature
絨羽的隔熱作用 (Down feathers insulate)
由於缺乏小羽枝和蓬鬆能力，絨鴨的絨羽提供了隔熱
(The down feathers of eider ducks provide insulation due to lack of barbules and ability to fluff.)
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#保護免受溫度危害
#Protect from temperature
由於缺乏小羽枝和蓬鬆能力，絨鴨的絨羽提供了隔熱
(The down feathers of eider ducks provide insulation due to lack of barbules and ability to fluff.)