Nfl
首字母缩略词，书写多为 NFL（全大写）。指联赛、赛事、球队商业生态，在美国体育媒体与流行文化中曝光度极高。
- “He has watched NFL games every Sunday since college.” (他从大学起每个周日都看 NFL 比赛。)
- “The NFL announced stricter concussion protocols.” (NFL 宣布了更严格的脑震荡处理规程。)
- “Ticket prices for the NFL playoffs surged online.” (NFL 季后赛门票价格在网上飙升。)
National（国家的）+ Football（橄榄球）+ League（联盟），现代美式橄榄球规则在二十世纪初逐步成型。
首字母缩写，无英语词缀；相关词 quarterback、touchdown、Super Bowl 宜搭配学习。
Super Bowl 是美国年度文化盛事之一；fantasy football 与 NFL 数据深度绑定。非美式足球国家学习者需区分 soccer 与 American football。
- 固定搭配: “NFL season” (NFL 赛季), “NFL draft” (NFL 选秀), “NFL player” (NFL 球员)
- 全称: National Football League
N-F-L 三个字母：National Football League；记住美国“football”是橄榄球不是足球。
“Friends gathered for an NFL playoff game, debating calls and sharing wings until midnight.” (朋友们聚在一起看 NFL 季后赛，争论判罚，啃鸡翅直到午夜。)