How much do you know about American football? 你对橄榄球了解多少？

　　There are many kinds of football games in the world. 世界上有许多种足球运动。

　　The football game in the United States is American football. 美国的足球运动是橄榄球。

　　Football is one of the most famous sport in the United States. 橄榄球是美国最著名的运动之一。

　　Can you play American football? 你会玩橄榄球吗？

　　There are at least 11 players on one football team. 一个橄榄球球队至少有11名队员。

　　To score a point, a team should bring a ball to the opposing team's goal. 为了得一分，球队应该把球带到对方球队的球门处。

　　All players wear helmets for protection. 所有的球员都戴头盔以自卫。

　　Football requires physical strength. 橄榄球需要体力。

　　Therefor, there are four quarters in one game, so players can take a rest during breaks. 因此，一场比赛分四场，所以球员可以在间歇期间休息。