American football one yard

Who knows the rules of American football? Explain the situation of each team in NFL. Thanks_ Baidu knows
American football game rules: during the game, the offensive side will play 11 offensive players; The defenders played 11 defenders. The attacker must advance more than 10 yards after four attacks. Every 10 yards, a new round of 4 attacks will be started. If the attacker can not advance more than 10 yards after 4 attacks, the attack and defense will changeThe rules of American football
Because American football is more representative between the two, other English speaking countries even simply call it "gridiron" to refer to American football. The standard course used by the NFL and NCAA is a rectangular lawn 360 feet (120 yards or 109.7 meters) long and 160 feet (53.33 yards or 48.8 meters) wide (some indoor competitions use imitation grass)
English explanation of American football rules~~~
American football is played by two teams, each with 11 players. Each game has four quarters, each quarter is 15 minutes. The field of American football is measured in yards. Yard means "yard". One yard is less than one meter. The "end zone" at both ends of the site is the arrival array area. In American footballName and function of each line in American football field
Finally, on the two inner corners of the end area (the areas at both ends of the dark green in the figure), there will be two red corner posts. If any part of the body or the ball touches the corner posts, it will be regarded as reaching the array. I hope that the subject and readers can enjoy the passion and charm of American footballAmerican football rules
The field is 100 yards long and 53 yards wide. The long and thin white line in the playing field is called the yard line, which helps players, referees and spectators understand the process of the attacker pushing the ball forward. The most important place in the field is probably the end zone, which is the area where the score lines on both sides of the competition field extend 10 yards outwardHow many yards is the football field
Rugby field size: rugby field: 160 yards long (1 yard =0.9144 meters), 75 yards wide, 110 yards apart between the two goal lines, 25 yards away from the goal line, and the end area between the two lines. American football: 120 yards (110 meters) long and 53 1/3 yards (49 meters) wide. FootballWho knows the rules of football
Offensive formation the offensive method of American football is similar to that of six person football. The team holding the ball (the offensive side) has four offensive opportunities to advance ten yards forward (the arrival area of the defensive side). Each opportunity is called a " Gear " (down)。 When the attacking side successfully advances ten yards (or more) in the fourth gear, it can again obtain the fourth gear to continue the attackThe rules of American football? Detail point
The competition was played on a 120 yard long and 160 foot wide field. A goal line is set at the first 10 yards of the end line. The distance between the two goal lines is 100 yards. The goal is set in the middle of the end line. The system is the same as that of British football. The American football ball is slightly smaller than the English football ball, with a ball length of 11 to 1
What are the abbreviations of American football players' positions
According to the book "Introduction to watching American football" written by Mr. chenguoliang, those who line up on the offensive and defensive line or within the next yard are called "e; Feng "e;, One yard later is called "e; Wei "e;, Therefore, the more correct translation of the running front should be called the running guard [editor] defensive line (DL) of the defensive group (defensive team), which consists of three to five opponentsAll rules of American football
Rules: American football matches are played between two teams with a maximum of 53 players (NFL rules). Both sides send 11 players to play, and can change some or all of the players at any time. The side who gets the ball control is the attacking side, and the goal is to push the ball to the opponent's position as far as possible