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。
Men who have gone half a year without eating chicken will start drooling copiously at the sight of even a feather duster.
有一个人半年没有吃鸡，看见了鸡毛帚就流涎三尺。
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