英文關鍵字
american
box
canadian
chain
chance
crew
defence
defense
dial
dialadown
down
equipment
field
football
game
gang
goal
gridiron
half
hand
indicator
judge
last
line
linesman
male
man
marker
match
number
offence
offense
official
opportunity
play
points
pole
professional
referee
score
sidelines
sign
signal
sliding
snap
sport
team
umpire
win
yards