... 海羊齿 feather star 羽区 feather tract; pterylae 发热 febrility; feverishness ...
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Grebes have a unique feather-eating behavior, but there are many suspicion and dispute on the mechanism of the digestion process and the function of feathers in the digestive tract.
䴙䴘目鸟类有独特的食羽行为，但对进入消化道后羽毛的功能、消化机理等存疑及争议颇多。
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