American football is derived from the English game of rugby, and is entirely different from ordinary football, that is, soccer or association football.
American football is derived from the English game of rugby, and is entirely different from ordinary football, that is, soccer or association football.
美国的橄榄球（美式足球）运动起源于英国的橄榄球赛，同一般的足球运动、即英式足球截然不同。