How to inflate football not the air needle connected to the air cylinder

How does football deflate
Insert an air needle into the air hole to deflate. Remember that it is only an air needle, not an air needle connected to an air cylinder
Football materials
You are greedy enough to ask so many questions. I answered the third question. Basically, they have nothing in common except that they are called rugby in Chinese (the words used in English are also different). In contrast to American rugby, the ball is inflated. When passing the ball, you can only wear it backwards. There is no limit on the number of attacks. The touchdown scores are different. You don't wear complex protective equipmentWho knows the rules of football
The most basic equipment in football matches is football. The Official NFL rugby is handmade by Wilson sporting goods company. It is an oval ball, about 27.9 to 29.2 cm longAbout American football
It's similar to basketball in texture and needs airIs rugby refilled? Why is the nozzle a hole
Basically, the pores of the foot basket row of olives in the ball are the same. There's no doubt about it
Is the football used in the game inflatable? If not, what's in it
It's not inflated ~ ~ it's solid ~ ~ it's filled with something similar to cotton and down
Football &\xf3c8; How to deflate? Tell me
When pumping, connect the air needle with the air pump. When bleeding, just insert an air needle, and the air will run out by itself. Because the pressure inside the ball is so much greater than outsideThe rules of American football
The standard American football game is divided into four sections, each of which is 15 minutes. The second section is called the first half and the fourth section is called the second half. There is a 12 minute (20 minutes in the college game) half-time break between the first half and the second half. At the beginning of the second half, the ball will kick off again as at the beginning of the gameAll 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 one who gets the ball control is the attacker, whose goal is to push the ball to the opponent's position as far as possibleIs football air wet
There is a bladder inside the football, which is also connected with an open channel specially used for inflation tied with an inflation pipe. This is to facilitate the inflation of football