in American football, the score resulting from a team keeping possession of the ball by advancing at least ten yards in a series of four downs (chances to advance; see down5 (3))
| 单词 | first down |
| 释义 | first downnounin American football, the score resulting from a team keeping possession of the ball by advancing at least ten yards in a series of four downs (chances to advance; see down5 (3)) |
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