In the American football game, "first dive" means that the player with the ball successfully gets the first chance to squat on the court, that is, "the first squat". This mark is usually placed by the referee with the first squat mark, indicating that the player with the ball has successfully won the first squat. In the game, it is very important for the team to get the first drop, because it means that the team is one step closer to winning the game. The team with the ball needs to get enough first drops to tilt the balance of winning the game to itself.

"set! Let's begin. Hut is a slogan or command in American football. "In the process of the game, when the player hears" set ",he needs to stop moving immediately and prepare for the next action. When hearing "Hut", the player will take a small step forward. Finally, when they hear the second "Hut", the players will go all out. This slogan can help the referee to better control the rhythm and order of the game, and at the same time make the players more coordinated on the court.