| 释义 |
first downn.Football（名词）【橄榄球】- The first in the series of four downs in which an offensive team must advance ten yards to retain possession of the ball.第一次进攻：四次进攻中的第一次，进攻一方必须前进十码以得球
- A gain of ten or more yards entitling the offensive team to a new series of downs.再开始四次十码进攻权：推进十码或更远后使进攻队获得再一次进攻的权利
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