英文關鍵字
active
activity
background
ball
blurred
challenge
clay
close
closeup
competition
concept
court
entertainment
equipment
exercise
exercising
field
fitness
focus
game
green
grid
ground
hard
health
individual
leisure
lifestyle
line
match
motion
net
open
outdoor
play
professional
racket
recreation
sphere
sport
string
surface
tennis
tennisball
tournament
training
white
yellow