单词	feed dog
释义	feed dog noun : a notched piece of metal on a sewing machine that feeds material into position under the needle Word History First Known Use 1858, in the meaning defined above
随便看	nicotinamide adenine dinucleotide nicotinamide adenine dinucleotide phosphate nicotinamides nicotine nicotinean nicotined nicotineless nicotines nicotinian nicotinic nicotinic acid nicotinisms nicotinize nicotino- nicotinoyl nicotins nicotinyl nictate nictated nictates nictating nictation nictheroy nictitant nictitate

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