Penguin chicks grow a warm brown fluffy down of feathers and a thick layer of blubber to keep them warm in winter
企鹅幼崽长出暖和的棕色羽绒和一厚层脂肪,以便在冬天保暖
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Penguin chicks grow a warm brown fluffy down of feathers and a thick layer of blubber to keep them warm in winter
企鹅幼崽长出暖和的棕色羽绒和一厚层脂肪,以便在冬天保暖
2011-06-14 编辑:beck 标签:
2011-06-14 编辑:beck 标签:
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