英语词汇“first down”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	first down
释义	first down noun : the first in a series of four downs in which a football team must net a 10-yard gain to retain possession of the ball; also : the right to start such a series
随便看	naphthol blue black naphthol green B naphthol NEL naphtholsulfonic naphtholsulfonic acid naphthol yellow S naphthoquinone naphthoxide naphthoxy- naphthoxy naphthoyl naphthyl naphthyl naphthylacetic naphthylacetic acid naphthylamine naphthylamine naphthylamine black naphthylaminesulfonic naphthylaminesulfonic acid naphthylene naphthylic naphthyl methyl ketone naphthylthiourea naphthylthiourea

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